A Search Service for Abbreviation / Long Form

■ Search Result - Abbreviation : PCL

Search Conditions:
Search Keyword : PCL
Search Method : Exact match.
Research Area:

Results:  
Hit abbr.: 3 kinds.
(Click one to see its hit entries.)

(Appearance freq, Descending)
Abbreviation: PCL
Appearance Frequency: 7583 time(s)
Long forms: 358

Display Settings:
[Display Entries]
Long Form, 100 entries
    (Appearance freq, Descending)
Long Form, all entries
[Entries Per Page]
 per page
Page Control
Page: of
Long Form No. Long Form Research Area Co-occurring Abbreviation PubMed/MEDLINE Info. (Year, Title)
polycaprolactone
(4469 times)
Biomedical Engineering
(1329 times)
SEM (303 times)
PLA (219 times)
PEG (198 times)
1989 Compressed poly(vinyl alcohol)-polycaprolactone admixture as a model to evaluate erodible implants for sustained drug delivery.
posterior cruciate ligament
(1461 times)
Orthopedics
(699 times)
ACL (352 times)
TKA (138 times)
IKDC (114 times)
1981 Arthroscopy in the early diagnosis of injuries to the knee joint.
plasma cell leukemia
(243 times)
Hematology
(99 times)
MM (114 times)
MGUS (25 times)
PPCL (12 times)
1978 Plasma cell leukemia (PCL): A report on 15 patients.
PTSD Checklist
(179 times)
Psychiatry
(63 times)
PTSD (128 times)
CAPS (16 times)
VA (11 times)
1996 Psychometric properties of the PTSD Checklist (PCL).
Primary cardiac lymphoma
(96 times)
Cardiology
(28 times)
CT (8 times)
MRI (8 times)
DLBCL (7 times)
1989 [Primary lymphoma of the heart. Report of a case with immunohistochemical study].
Psychopathy Checklist: Youth Version
(74 times)
Psychology
(32 times)
APSD (9 times)
SAVRY (6 times)
YPI (5 times)
2002 The reliability and validity of the psychopathy checklist: youth version (PCL:YV) in nonincarcerated adolescent males.
Psychopathy Checklist: Screening Version
(59 times)
Psychology
(21 times)
PCL-R (6 times)
ASPD (3 times)
PICTS (3 times)
1996 Predicting aggressive and socially disruptive behavior in a maximum security forensic psychiatric hospital.
photochemiluminescence
(46 times)
Chemistry
(13 times)
DPPH (9 times)
CL (7 times)
RSD (5 times)
1978 [Photochemiluminescence of tryptophan-containing peptides and proteins during photooxidation. VII. Mechanism of sensitization by eosin of the photochemiluminescence of human serum albumin solutions].
Posttraumatic Stress Disorder Checklist
(43 times)
Psychiatry
(13 times)
PTSD (18 times)
PCL-5 (4 times)
GAD-7 (3 times)
2006 The relationship between posttraumatic stress disorder following spinal cord injury and locus of control.
10  pacing cycle length
(40 times)
Cardiology
(30 times)
APD (5 times)
ERP (5 times)
AF (4 times)
1982 Comparative study of two methods of estimating sinoatrial conduction time in patients with abnormal sinus node function.
11  pubococcygeal line
(30 times)
Urology
(12 times)
MRI (15 times)
MPL (8 times)
POP (7 times)
1993 [National working team report on defecography].
12  pancreatic cystic lesions
(29 times)
Gastroenterology
(12 times)
EUS (9 times)
EUS-FNA (8 times)
IPMN (5 times)
2011 Ablation of pancreatic cystic lesions: the use of multiple endoscopic ultrasound-guided ethanol lavage sessions.
13  polycaprolactone diol
(25 times)
Biomedical Engineering
(6 times)
FTIR (6 times)
TDI (4 times)
AFM (3 times)
1993 Enzyme-biomaterial interactions: effect of biosystems on degradation of polyurethanes.
14  periciliary liquid
(24 times)
Biology
(5 times)
CF (8 times)
ASL (6 times)
CFTR (6 times)
1998 Coordinated clearance of periciliary liquid and mucus from airway surfaces.
15  primary cutaneous lymphoma
(24 times)
Dermatology
(13 times)
MF (10 times)
CBCL (5 times)
CTCL (4 times)
1997 Primary cutaneous lymphomas: a study of 37 cases.
16  Psychopathy Checklist
(22 times)
Psychiatry
(10 times)
ANT (1 time)
CD (1 time)
ERP (1 time)
1990 Evaluating the construct validity of psychopathy in black and white male inmates: three preliminary studies.
17  paracentral lobule
(20 times)
Brain
(5 times)
FC (5 times)
MOG (5 times)
SMA (5 times)
2007 Amplitude of low frequency fluctuation within visual areas revealed by resting-state functional MRI.
18  posterior chamber lens
(20 times)
Ophthalmology
(19 times)
ECCE (4 times)
ACL (3 times)
ICCE (3 times)
1985 Intraoperative posterior chamber lens haptic fixation in the human cadaver eye.
19  posterior condylar line
(20 times)
Orthopedics
(11 times)
PCA (8 times)
TKA (8 times)
CT (7 times)
2007 How precise is the determination of rotational alignment of the femoral prosthesis in total knee arthroplasty: an in vivo study.
20  primary cerebral lymphoma
(19 times)
Neoplasms
(6 times)
NHL (3 times)
ADCn (2 times)
AUC (2 times)
1989 Primary cerebral lymphoma: presentation of eight cases and review of the literature.
21  epsilon-polycaprolactone
(16 times)
Biomedical Engineering
(5 times)
HAP (3 times)
CA (2 times)
DSC (2 times)
2009 Fabrication of polycaprolactone collagen hydrogel constructs seeded with mesenchymal stem cells for bone regeneration.
22  Pseudomonas cepacia lipase
(16 times)
Biochemistry
(8 times)
CALB (2 times)
CRL (2 times)
2M2B (1 time)
1995 Thermodynamic and kinetic parameters of lipase-catalyzed ester hydrolysis in biphasic systems with varying organic solvents.
23  probabilistic classification learning
(15 times)
Neurology
(7 times)
OCD (3 times)
IGT (2 times)
MMSE (2 times)
2000 Schizophrenics know more than they can tell: probabilistic classification learning in schizophrenia.
24  Polygonatum cyrtonema lectin
(14 times)
Biochemistry
(8 times)
GNA (2 times)
OJL (2 times)
CBS (1 time)
2006 Anti-HIV I/II activity and molecular cloning of a novel mannose/sialic acid-binding lectin from rhizome of Polygonatum cyrtonema Hua.
25  paclitaxel
(13 times)
Pharmacology
(8 times)
PEG-PE (3 times)
CUR (2 times)
MDR (2 times)
1997 Cyclosporin A enhances paclitaxel toxicity against leukemia and respiratory epithelial cancers.
26  Purkinje cell layer
(12 times)
Neurology
(10 times)
ML (6 times)
EGL (4 times)
PACAP (3 times)
1996 Serotonergic modulation of evoked responses in turtle cerebellar Purkinje cells.
27  Primary colorectal lymphoma
(11 times)
Neoplasms
(5 times)
APC (1 time)
CI (1 time)
CSS (1 time)
2000 Primary colonic lymphoma.
28  posterior collagenous layer
(10 times)
Ophthalmology
(10 times)
CHED (2 times)
DM (2 times)
PPD (2 times)
1984 Characterization of the Descemet's membrane/posterior collagenous layer isolated from Fuchs' endothelial dystrophy corneas.
29  perfused capillary length
(9 times)
Physiology
(3 times)
I/R (4 times)
RBC (4 times)
ROS (2 times)
2000 Protective effects of leukopenia and tissue plasminogen activator in microvascular ischemia-reperfusion injury.
30  porphyrinogen carboxy-lyase
(9 times)
Pharmacology
(6 times)
HCB (7 times)
ALA (1 time)
ALA-S (1 time)
1984 [Experimental porphyria induced by chlorinated hydrocarbons. Studies of porphyrinogen carboxy-lyase in the experimental model of human cutaneous delayed porphyria].
31  phosphatidylcholine liposomes
(8 times)
Allergy and Immunology
(2 times)
ESR (2 times)
ACh (1 time)
BMDM (1 time)
1993 Antioxidant profile of nimesulide, indomethacin and diclofenac in phosphatidylcholine liposomes (PCL) as membrane model.
32  Polycystin-L
(8 times)
Biochemistry
(5 times)
ADPKD (4 times)
PC2 (2 times)
beta2AR (1 time)
2001 Transport function of the naturally occurring pathogenic polycystin-2 mutant, R742X.
33  phenylacetyl-CoA ligase
(7 times)
Microbiology
(4 times)
AT (3 times)
6-APA (2 times)
PEN (2 times)
1991 "In vitro" synthesis of different naturally-occurring, semisynthetic and synthetic penicillins using a new and effective enzymatic coupled system.
34  primary central nervous system lymphoma
(7 times)
Neoplasms
(3 times)
HD (2 times)
MLD (2 times)
NHL (2 times)
1994 Twenty-year survival following excision of primary CNS lymphoma without radiation therapy: case report.
35  lignin-polycaprolactone
(6 times)
Natural Science Disciplines
(2 times)
BM (1 time)
CL (1 time)
DRG (1 time)
2011 Alignment and composition of laminin-polycaprolactone nanofiber blends enhance peripheral nerve regeneration.
36  partial carotid ligation
(6 times)
General Surgery
(1 time)
LCA (2 times)
4DUS (1 time)
C.oil (1 time)
2014 Curcuma oil attenuates accelerated atherosclerosis and macrophage foam-cell formation by modulating genes involved in plaque stability, lipid homeostasis and inflammation.
37  perfluorocarbon liquid
(6 times)
Ophthalmology
(6 times)
PCPV (3 times)
BSS (2 times)
ECC (1 time)
2004 Perfluorocarbon perfused vitrectomy: animal studies.
38  periciliary layer
(6 times)
Immunity, Mucosal
(1 time)
ASL (3 times)
MCC (3 times)
KS (2 times)
2008 Modelling mucociliary clearance.
39  polycation liposome
(6 times)
Pharmacology
(3 times)
PEI (4 times)
siRNA (2 times)
Ago2 (1 time)
2001 A novel non-viral gene transfer system, polycation liposomes.
40  PTSD Symptom Checklist
(6 times)
Psychiatry
(2 times)
PTSD (5 times)
CAPS (2 times)
AUC (1 time)
2006 Predicting treatment outcome on three measures for post-traumatic stress disorder.
41  papillary cystadenoma lymphomatosum
(5 times)
Otolaryngology
(1 time)
--- 1979 Malignant transformation of a Warthin tumor: case report, review of the literature, and discussion of pathology.
42  periciliary liquid layer
(5 times)
Physiology
(3 times)
ASL (4 times)
CF (3 times)
ML (2 times)
2006 Soluble mediators, not cilia, determine airway surface liquid volume in normal and cystic fibrosis superficial airway epithelia.
43  polycaprolactone-co-lactide
(5 times)
Biocompatible Materials
(1 time)
aECM (2 times)
CS (2 times)
GAGs (2 times)
2012 Synergistic effect of defined artificial extracellular matrices and pulsed electric fields on osteogenic differentiation of human MSCs.
44  Post-traumatic Checklist
(5 times)
Nursing
(1 time)
PTSD (3 times)
CAPS (1 time)
CISM (1 time)
2007 An exploration of post-traumatic stress disorder in emergency nurses following Hurricane Katrina.
45  posterior chamber intraocular lenses
(5 times)
Ophthalmology
(5 times)
BCVA (1 time)
IOL (1 time)
PE (1 time)
1989 Transcleral ciliary sulcus fixation of posterior chamber intraocular lens implants.
46  print, cut and laminate
(5 times)
Chemistry Techniques, Analytical
(3 times)
CD-PADs (1 time)
Hct (1 time)
LOD (1 time)
2015 Inexpensive, rapid prototyping of microfluidic devices using overhead transparencies and a laser print, cut and laminate fabrication method.
47  Problem Checklist
(5 times)
Rehabilitation
(3 times)
CIQ (1 time)
HIFI (1 time)
mTBI (1 time)
1999 Sensitivity of three recent questionnaires to mild traumatic brain injury-related effects.
48  packaging cell lines
(4 times)
Genetics, Medical
(2 times)
HPV-16 (2 times)
CRT (1 time)
DCs (1 time)
1999 The resistance of retroviral vectors produced from human cells to serum inactivation in vivo and in vitro is primate species dependent.
49  paracarcinomatous liver
(4 times)
General Surgery
(2 times)
HCC (4 times)
GP73 (2 times)
OS (2 times)
2011 Increased Golgi protein 73 expression in hepatocellular carcinoma tissue correlates with tumor aggression but not survival.
50  parietococcygeal length
(4 times)
Medicine
(3 times)
CT (1 time)
OC (1 time)
ON (1 time)
2006 Structure of the optic canal in human ontogenesis.
51  parvocellular layer
(4 times)
Brain
(3 times)
MCL (3 times)
LGN (2 times)
LI (1 time)
1979 A quantitative study of chromatic organisation and receptive fields of cells in the lateral geniculate body of the rhesus monkey.
52  patient-centered label
(4 times)
Drug Therapy
(1 time)
CI (2 times)
RR (2 times)
UMS (1 time)
2010 Effect of standardized, patient-centered label instructions to improve comprehension of prescription drug use.
53  photonic crystal layer
(4 times)
Ophthalmology
(2 times)
CPP (2 times)
LEDs (2 times)
PL (2 times)
2008 The variation of the enhanced photoluminescence efficiency of Y2O3:Eu3+ films with the thickness to the photonic crystal layer.
54  piezochromic luminescent
(4 times)
Chemistry
(2 times)
AIE (2 times)
2012 Piezochromic luminescent (PCL) behavior and aggregation-induced emission (AIE) property of a new cationic iridium(III) complex.
55  Point Cloud Library
(4 times)
Biosensing Techniques
(3 times)
GNSS (1 time)
HMD (1 time)
I-ICP (1 time)
2017 Designing and Testing a UAV Mapping System for Agricultural Field Surveying.
56  precancerous lesions
(4 times)
Gastroenterology
(2 times)
AFP (1 time)
BCC (1 time)
cyan (1 time)
2013 Expression and significance of HMGB1, TLR4 and NF-κB p65 in human epidermal tumors.
57  proximal centriole-like structure
(4 times)
Biological Phenomena
(1 time)
GC (2 times)
PCM (1 time)
2015 Atypical centrioles during sexual reproduction.
58  pyramidal cell layer
(4 times)
Neurology
(1 time)
ADC (1 time)
CA (1 time)
DG (1 time)
1990 [The effects of thiamylal, ketamine and nicardipine on the hippocampal theta waves produced by cerebral ischemia in cats].
59  chitosan-polycaprolactone
(3 times)
Polysaccharides
(1 time)
BCECs (1 time)
CEC (1 time)
ECM (1 time)
2012 Chitosan-based nanofibrous membranes for antibacterial filter applications.
60  patient-centered learning
(3 times)
Education
(3 times)
UNDSMHS (1 time)
2002 Endocrine physiology in a patient-centered learning curriculum.
61  perichromosomal layer
(3 times)
Molecular Biology
(2 times)
CAF-1 (1 time)
NADs (1 time)
p150N (1 time)
2016 The p150N domain of chromatin assembly factor-1 regulates Ki-67 accumulation on the mitotic perichromosomal layer.
62  plasma citrulline level
(3 times)
Genetics
(2 times)
COX-2 (2 times)
GI (2 times)
ACR (1 time)
2007 Role and significance of plasma citrulline in the early phase after small bowel transplantation in pigs.
63  poly(cationic lipid)
(3 times)
Biochemistry
(2 times)
chol (2 times)
DOPE (1 time)
FBS (1 time)
2001 Cationic lipid polymerization as a novel approach for constructing new DNA delivery agents.
64  polymer coating as polycaprolactone
(3 times)
Biocompatible Materials
(1 time)
PEO (1 time)
SLM (1 time)
2015 Comparison of Selective Laser Melted Titanium and Magnesium Implants Coated with PCL.
65  Post-traumatic Stress Checklist
(3 times)
Occupational Medicine
(2 times)
PTSD (3 times)
BSI (1 time)
STAIR (1 time)
2010 Gender differences in probable posttraumatic stress disorder among police responders to the 2001 World Trade Center terrorist attack.
66  Prestwick Chemical Library
(3 times)
Drug Therapy
(1 time)
HTS (2 times)
ABC (1 time)
FLC (1 time)
2011 The monoamine oxidase A inhibitor clorgyline is a broad-spectrum inhibitor of fungal ABC and MFS transporter efflux pump activities which reverses the azole resistance of Candida albicans and Candida glabrata clinical isolates.
67  primary carcinoma of the liver
(3 times)
Medicine
(1 time)
CCC (1 time)
CMV (1 time)
EBV (1 time)
1979 Primary carcinoma of the liver. A histological study of 52 cases from Denmark.
68  primary cerebral non-Hodgkin's lymphoma
(3 times)
Cardiovascular Diseases
(1 time)
IPI (1 time)
1991 [Primary multicentric cerebral lymphoma in a previously healthy patient].
69  primary congenital lymphedema
(3 times)
Obstetrics
(2 times)
--- 1999 Mapping of primary congenital lymphedema to the 5q35.3 region.
70  Primary cutaneous leiomyosarcoma
(3 times)
Medicine
(1 time)
--- 2013 Primary cutaneous leiomyosarcoma: A rare malignant neoplasm.
71  progressive cavitating leukoencephalopathy
(3 times)
Central Nervous System Diseases
(1 time)
ISC (1 time)
LIAS (1 time)
MRI (1 time)
2017 [Progressive cavitating leukoencephalopathy: four cases and literatures review].
72  proximal contact loss
(3 times)
Dentistry
(3 times)
FDP (1 time)
GEE (1 time)
IFPs (1 time)
2017 Prevalence of proximal contact loss between implant-supported fixed prostheses and adjacent natural teeth and its associated factors: a 7-year prospective study.
73  PTSD Checklist - Military version
(3 times)
Social Work
(1 time)
PTSD (2 times)
WAR (2 times)
CBM-I (1 time)
2016 Intervention Efficacy in Engaging Black and White Veterans with Post-traumatic Stress Disorder into Treatment.
74  pyrocatechol
(3 times)
Pharmacology
(1 time)
DPH (2 times)
LDP (2 times)
MDP (2 times)
2001 A new sensitive and selective spectrophotometric method for the determination of catechol derivatives and its pharmaceutical preparations.
75  p-PCL
(2 times)
Biomedical Engineering
(1 time)
SEM (2 times)
ANOVA (1 time)
AP (1 time)
2014 The Effects of Plasma Treated Electrospun Nanofibrous Poly (ε-caprolactone) Scaffolds with Different Orientations on Mouse Embryonic Stem Cell Proliferation.
76  Pain Cognition List
(2 times)
Neurology
(1 time)
HZ (1 time)
OR (1 time)
PHN (1 time)
1990 What do chronic pain patients think of their pain? Towards a pain cognition questionnaire.
77  Paranoia Checklist
(2 times)
Psychiatry
(1 time)
PD (1 time)
PDs (1 time)
2019 Inflexible social inference in individuals with subclinical persecutory delusional tendencies.
78  parent cell lines
(2 times)
Biochemistry
(1 time)
DR (2 times)
PDAC (2 times)
GST (1 time)
2016 Integrinbeta1 modulates tumour resistance to gemcitabine and serves as an independent prognostic factor in pancreatic adenocarcinomas.
79  partial carotid artery ligation
(2 times)
Cell Death
(2 times)
ATF3 (1 time)
EndMT (1 time)
LCA (1 time)
2020 Semaphorin 7A promotes endothelial to mesenchymal transition through ATF3 mediated TGF-β2/Smad signaling.
80  Patient Checklist
(2 times)
Neurology
(1 time)
PTSD (2 times)
eTNS (1 time)
MDD (1 time)
2010 Functional quality of life in full versus partial posttraumatic stress disorder among veterans returning from Iraq and Afghanistan.
81  PC layer
(2 times)
Physiology
(1 time)
AOXs (1 time)
CaBP (1 time)
CB1R (1 time)
2013 The du(2J) mouse model of ataxia and absence epilepsy has deficient cannabinoid CB₁ receptor-mediated signalling.
82  pediatric cardiac catheterization laboratory
(2 times)
Cardiology
(2 times)
CHD (1 time)
2005 Is it safe to perform cardiac catheterizations on adults with congenital heart disease in a pediatric catheterization laboratory?
83  percutaneous cholangioscopic lithotomy
(2 times)
Medicine
(1 time)
--- 1992 Removal of intrahepatic cholesterol stones by the combination of percutaneous pneumatic balloon dilatation and cholangioscopic lithotomy.
84  pericallosal lipomas
(2 times)
Pediatrics
(1 time)
CC (2 times)
MRI (1 time)
2018 Fetal pericallosal lipomas - Clues to diagnosis in the second trimester.
85  peritoneal cavity lymphocytes
(2 times)
Allergy and Immunology
(1 time)
LAK (1 time)
N-CWS (1 time)
rIL-2 (1 time)
1991 Synergistic effect of Nocardia rubra cell wall skeleton and recombinant interleukin 2 for in vivo induction of lymphokine-activated killer cells.
86  persistent CL
(2 times)
Veterinary Medicine
(2 times)
IOI (2 times)
2014 Hormonal, luteal, and follicular changes during initiation of persistent corpus luteum in mares.
87  persistent corpus luteum
(2 times)
Veterinary Medicine
(2 times)
IOIs (1 time)
2009 Characterization of progesterone profiles in fall-calving Norwegian Red cows.
88  petroclinoid ligaments
(2 times)
Orthodontics
(1 time)
ICL (1 time)
2003 Calcification of the interclinoid and petroclinoid ligaments of sella turcica: a radiographic study of the prevalence.
89  photoinduced chemiluminescence
(2 times)
Biochemistry
(2 times)
DMF (1 time)
MCLA (1 time)
2008 Investigation on the antioxidation of the flavonoids based on the photoinduced chemiluminescence of lucigenin by a new Zinc(II) phthalocyanine compound.
90  phytochelatin-like
(2 times)
Biological Science Disciplines
(1 time)
cDNA (2 times)
MT (2 times)
AtMT3 (1 time)
2016 Cucumber Metallothionein-Like 2 (CsMTL2) Exhibits Metal-Binding Properties.
91  pineapple crown leaves
(2 times)
Molecular Biology
(1 time)
CNC (1 time)
PP (1 time)
2018 Isolation and characterization of cellulose nanocrystals from pineapple crown waste and their potential uses.
92  plasma cholesterol lowering
(2 times)
Molecular Biology
(1 time)
AAA (1 time)
Ang II (1 time)
TF (1 time)
2014 Plasma cholesterol-induced lesion networks activated before regression of early, mature, and advanced atherosclerosis.
93  plasma cortisol levels
(2 times)
Endocrinology
(2 times)
AVP (1 time)
DEXA (1 time)
PA (1 time)
1976 [Secretory regulation and episodic secretion of aldosterone in patients with primary aldosteronism (author's transl)].
94  platform, consisting of polycaprolactone
(2 times)
Molecular Biology
(1 time)
ECs (1 time)
GF (1 time)
GFs (1 time)
2018 Polycaprolactone Nanofibers Containing Vascular Endothelial Growth Factor-Encapsulated Gelatin Particles Enhance Mesenchymal Stem Cell Differentiation and Angiogenesis of Endothelial Cells.
95  pleomorphic carcinoma of the lung
(2 times)
Neoplasms
(1 time)
CK (1 time)
TTF-1 (1 time)
2005 Expression of CD99 in pleomorphic carcinomas of the lung.
96  Po-Circo-like
(2 times)
Animal Diseases
(2 times)
Rep (2 times)
nt (1 time)
ORFs (1 time)
2020 Genetic characterization of three porcine circovirus-like viruses in pigs with diarrhoea in China.
97  poly (caprolactone)-chitosan-poly (vinyl alcohol)
(2 times)
Nanotechnology
(2 times)
--- 2016 Effect of novel blend nanofibrous scaffolds on diabetic wounds healing.
98  poly vinyl caprolactam
(2 times)
Pharmacology
(1 time)
CHX (1 time)
PEG (1 time)
2019 Enzyme responsive copolymer micelles enhance the anti-biofilm efficacy of the antiseptic chlorhexidine.
99  poly(acrylic acid) (PAA)
(2 times)
Polymers
(1 time)
ATR-FTIR (1 time)
CFX (1 time)
DSC (1 time)
2016 The Influence of Lyophilized EmuGel Silica Microspheres on the Physicomechanical Properties, In Vitro Bioactivity and Biodegradation of a Novel Ciprofloxacin-Loaded PCL/PAA Scaffold.
100  polycystic liver
(2 times)
General Surgery
(1 time)
MELD (1 time)
OLT (1 time)
1993 MRI and CT features of polycystic liver disease.