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Abbreviation: PI
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Long Form No. Long Form Research Area Co-occurring Abbreviation PubMed/MEDLINE Info. (Year, Title)
propidium iodide
(3808 times)
Neoplasms
(419 times)
ROS (331 times)
FITC (219 times)
LDH (149 times)
1976 Rapid staining methods for analysis of deoxyribonucleic acid and protein in mammalian cells.
phosphatidylinositol
(3368 times)
Biochemistry
(1114 times)
PC (731 times)
PE (569 times)
PS (452 times)
1966 Fatty acids in phospholipids isolated from human red cells.
pulsatility index
(3144 times)
Obstetrics
(829 times)
RI (1075 times)
MCA (410 times)
PSV (295 times)
1980 The relationship between ultrasonic pulsatility index and proximal arterial stenosis in a canine model.
postinoculation
(2723 times)
Veterinary Medicine
(1075 times)
BVDV (252 times)
ELISA (81 times)
CNS (50 times)
1967 Sequential formation of vaccinia virus proteins and viral deoxyribonucleic acid replication.
protease inhibitor
(2558 times)
Acquired Immunodeficiency Syndrome
(698 times)
NNRTI (452 times)
ART (350 times)
HAART (289 times)
1970 Protease inhibitor (Pi) phenotypes in chromosome aberrations.
plaque index
(1664 times)
Dentistry
(1073 times)
GI (928 times)
PD (679 times)
CAL (533 times)
1985 The application of a collagen stabilizer to the gingiva of the beagle dog. Effect on ligature-induced periodontal disease.
phosphoinositide
(958 times)
Biochemistry
(197 times)
PKC (64 times)
PLC (62 times)
IP (32 times)
1975 [Inositol-containing phospholipids in rat brain and liver].
pelvic incidence
(811 times)
Orthopedics
(394 times)
LL (516 times)
PT (469 times)
SS (373 times)
2004 Spondylolisthesis, pelvic incidence, and spinopelvic balance: a correlation study.
proliferation index
(765 times)
Neoplasms
(169 times)
AI (130 times)
PCNA (74 times)
FCM (55 times)
1975 [The effect of diphtheria toxin on proliferation of a transplantable culture of human amnion cells].
10  polyimide
(658 times)
Biomedical Engineering
(135 times)
PAA (40 times)
LIG (24 times)
PDMS (24 times)
2000 Adhesion and patterning of cortical neurons on polyethylenimine- and fluorocarbon-coated surfaces.
11  perfusion index
(288 times)
Medicine
(41 times)
HR (24 times)
PVI (24 times)
MAP (23 times)
1986 Cortex perfusion index: a sensitive detector of acute rejection crisis in transplanted kidneys.
12  prognostic index
(246 times)
Neoplasms
(104 times)
OS (53 times)
NLR (43 times)
PNI (39 times)
1982 A modified prognostic index based upon nutritional measurements.
13  Pneumatosis intestinalis
(211 times)
General Surgery
(34 times)
CT (29 times)
PVG (17 times)
HPVG (11 times)
1983 Pneumatosis intestinalis in childhood leukaemia. Report of a case with gas in the portal vein and review of the literature.
14  prediction interval
(201 times)
Medicine
(22 times)
CI (44 times)
OR (14 times)
RCTs (11 times)
1975 Relationship of reaction time to deceleration and variability of heart rate in nonretarded and retarded persons.
15  proportional-integral
(187 times)
Biomedical Engineering
(84 times)
MPC (8 times)
PD (7 times)
PMSM (7 times)
1988 Expert-system-based fuzzy control of arterial pressure by drug infusion.
16  ponderal index
(185 times)
Pediatrics
(40 times)
BMI (49 times)
BW (27 times)
SGA (19 times)
1978 Fetal malnutrition: an experimental study of its consequences on infant development in two caregiving environments.
17  pressure injury
(175 times)
Nursing
(92 times)
SCI (10 times)
AUC (8 times)
HAPI (8 times)
2011 A comparison of ground reaction forces determined by portable force-plate and pressure-insole systems in alpine skiing.
18  peak intensity
(169 times)
Diagnostic Imaging
(34 times)
CEUS (94 times)
AUC (87 times)
TTP (75 times)
2002 Assessment of coronary stenoses of graded severity by myocardial contrast echocardiography.
19  Pain Interference
(151 times)
Orthopedics
(60 times)
PROMIS (124 times)
PF (107 times)
UE (32 times)
2009 The relationship between subjective reports of fatigue and executive control in multiple sclerosis.
20  protective index
(149 times)
Chemistry
(20 times)
MES (34 times)
scPTZ (13 times)
PTZ (7 times)
1979 Eye movements simultaneously recorded by electrooculographic and photoelectric methods.
21  proactive interference
(140 times)
Psychology
(77 times)
WM (21 times)
RI (6 times)
BF (4 times)
1971 The effects of practice trials and prior learning on motor memory.
22  principal investigator
(129 times)
Medicine
(14 times)
NIH (12 times)
EM (5 times)
IQR (4 times)
1985 National Institutes of Health phase I, Small Business Innovation Research applications: fiscal year 1983 results.
23  pain intensity
(123 times)
Neurology
(23 times)
PR (13 times)
VAS (13 times)
AEs (11 times)
1979 Comparison of the analgesic dose-effect relationships of nefopam and oxycodone in postoperative pain.
24  pancreatic insufficiency
(121 times)
Pediatrics
(46 times)
CF (93 times)
PS (37 times)
CFTR (12 times)
1976 Quantitative evaluation of serum pancreatic isoamylases in cystic fibrosis.
25  pars intermedia
(118 times)
Endocrinology
(50 times)
PD (32 times)
PPD (26 times)
RPD (23 times)
1975 The effect of apomorphine and ergocriptine on the release of MSH by the pars intermedia of Rana pipiens.
26  pulse interval
(115 times)
Physiology
(38 times)
HR (27 times)
BRS (23 times)
LF (21 times)
1975 Reduced baroreflex sensitivity with volume loading in conscious dogs.
27  primary insomnia
(113 times)
Psychophysiology
(41 times)
PSQI (17 times)
PSG (11 times)
GS (8 times)
2001 Primary versus secondary insomnia in older adults: subjective sleep and daytime functioning.
28  polydispersity index
(104 times)
Pharmacology
(37 times)
ZP (23 times)
EE (19 times)
DSC (12 times)
2001 A new nerve guide conduit material composed of a biodegradable poly(phosphoester).
29  phagocytic index
(103 times)
Allergy and Immunology
(33 times)
PA (19 times)
SOD (9 times)
NBT (8 times)
1976 The effect of cytotoxic drugs on neutrophil phagocytosis in vitro and in patients with acute myelogenous leukaemia.
30  PISTILLATA
(99 times)
Botany
(46 times)
AP3 (64 times)
AG (16 times)
AP1 (11 times)
1991 The FLO10 Gene Product Regulates the Expression Domain of Homeotic Genes AP3 and PI in Arabidopsis Flowers.
31  plant introduction
(97 times)
Genetics
(24 times)
SCN (11 times)
QTL (6 times)
MAS (4 times)
1984 Abscisic Acid and its relationship to seed filling in soybeans.
32  parallel imaging
(93 times)
Diagnostic Imaging
(54 times)
CS (28 times)
SNR (21 times)
MRI (12 times)
2004 Current concepts and advances in clinical parallel magnetic resonance imaging.
33  proinsulin
(87 times)
Endocrinology
(42 times)
IRI (23 times)
TI (11 times)
IGT (9 times)
1981 Effects of liver and kidney on high molecular weight immunoreactive insulin (HWIRI), proinsulin (PI) and insulin (I) in man.
34  performance improvement
(85 times)
Health Services
(21 times)
CME (9 times)
ED (3 times)
ISS (3 times)
1994 The Agenda for Change: performance focus alters JCAHO's survey process.
35  pulsatility
(85 times)
Diagnostic Imaging
(19 times)
RI (82 times)
MCA (9 times)
PSV (8 times)
1990 Uterine and fetal umbilical artery flow velocity waveforms in normal first trimester pregnancies.
36  peri-implantitis
(84 times)
Dentistry
(52 times)
CP (11 times)
PM (11 times)
BOP (8 times)
2000 Aspartate aminotransferase activity in crevicular fluid from dental implants.
37  performance index
(79 times)
Veterinary Medicine
(13 times)
RCs (5 times)
OEC (3 times)
PSII (3 times)
1980 Classification of abnormal children: discrimination learning ability.
38  pathogen inactivation
(69 times)
Hematology
(57 times)
PCs (17 times)
PLT (11 times)
PC (7 times)
2001 Reducing the risk of blood transfusion.
39  photoionization
(63 times)
Chemistry Techniques, Analytical
(18 times)
EAE (9 times)
EI (8 times)
MS (8 times)
1984 Interaction of high temperature and Salmonella pullorum antigen concentration on serum agglutinin and corticosteroid responses in white rock chickens.
40  polyisoprene
(63 times)
Chemistry
(18 times)
PS (20 times)
PDMS (5 times)
DSC (4 times)
1994 Preparation and properties of A-B-A type block copolymer membranes consisting of poly(N-hydroxypropyl-L-glutamine) as the A component and polyisoprene as the B component.
41  Pacific Islander
(62 times)
Public Health
(13 times)
NH (7 times)
AA (6 times)
BMI (6 times)
1981 Hospital admissions for asthma in children: a prospective study.
42  pulmonary insufficiency
(59 times)
Cardiology
(32 times)
TOF (25 times)
RV (20 times)
CMR (8 times)
1977 [Validity of thermodilution cardiac output determination in the presence of pulmonary insufficiency (author's transl)].
43  pars intercerebralis
(58 times)
Cell Biology
(11 times)
PL (10 times)
CA (7 times)
PDF (5 times)
1978 Locations and central projections of neurons associated with the retrocerebral neuroendocrine complex of the cockroach Periplaneta americana (L.).
44  permeability index
(58 times)
Environmental Health
(22 times)
SAR (26 times)
KR (16 times)
RSC (16 times)
1984 Increased airway mucosal permeability of smokers. Relationship to airway reactivity.
45  peripheral iridotomy
(57 times)
Ophthalmology
(41 times)
IOP (23 times)
ICL (5 times)
PAC (5 times)
1977 Peripheral iridectomy in closed angle glaucoma-- late complications.
46  progression index
(46 times)
Neurology
(20 times)
MS (30 times)
EDSS (19 times)
MSSS (10 times)
1986 Progression index and disability status in multiple sclerosis: a resurvey of 207 patients in central Poland.
47  physical inactivity
(44 times)
Public Health
(15 times)
PA (13 times)
OR (5 times)
BMI (4 times)
2004 Joint impact of health risks on health care charges: 7-year follow-up of National Health Insurance beneficiaries in Japan (the Ohsaki Study).
48  posterior insula
(43 times)
Brain
(9 times)
AI (16 times)
dAI (14 times)
FC (12 times)
2014 You are the danger: attenuated insula response in methamphetamine users during aversive interoceptive decision-making.
49  Periodontal Index
(42 times)
Dentistry
(26 times)
GI (8 times)
BOP (3 times)
CPITN (3 times)
1974 Periodontal disease among youths 12-17 years, United States.
50  pulse inversion
(42 times)
Nuclear Medicine
(12 times)
CTR (11 times)
CEUS (7 times)
US (7 times)
1995 Phase-inversion cellulose acetate membranes for suppression of protein interferences in anodic stripping voltammetry.
51  paternity index
(41 times)
Jurisprudence
(24 times)
PE (8 times)
PD (6 times)
PIC (6 times)
1980 Numerical expression of paternity test results using predetermined indexes.
52  pyrrole-imidazole
(41 times)
Chemistry
(8 times)
TGF (6 times)
TGF-beta1 (4 times)
AP-1 (3 times)
2008 Novel gene silencer pyrrole-imidazole polyamide targeting lectin-like oxidized low-density lipoprotein receptor-1 attenuates restenosis of the artery after injury.
53  post-injury
(38 times)
Neurology
(17 times)
SCI (9 times)
TBI (3 times)
GFAP (2 times)
1977 [Ultrastructure of the cells and DNA synthesis in skeletal muscle regeneration. A study of the regeneration of the frog sartorius muscle by an electron microscopic autoradiographic method].
54  postirradiation
(38 times)
Radiology
(7 times)
Gy (2 times)
ADCw (1 time)
aPDT (1 time)
1977 Mucormycotic hepatic lesions resembling bacillary hemoglobinuria infarcts in irradiated calves.
55  probability interval
(38 times)
Veterinary Medicine
(21 times)
ELISA (3 times)
MAP (3 times)
OR (3 times)
2000 Decision analysis of tamoxifen for the prevention of invasive breast cancer.
56  patient involvement
(37 times)
Biology
(5 times)
HTA (5 times)
IVH (2 times)
NA (2 times)
1992 The role of instructional set on alcoholic performance.
57  posterior interval
(37 times)
Environmental Health
(22 times)
OR (4 times)
CAPES (3 times)
EC (3 times)
2004 Ozone and short-term mortality in 95 US urban communities, 1987-2000.
58  pulmonary infection
(37 times)
Pulmonary Medicine
(7 times)
PE (6 times)
NTM (4 times)
AFL (3 times)
1988 [Assessment of interaction between the left and right ventricles using pressure-volume loops in various heart diseases].
59  plasma insulin
(35 times)
Endocrinology
(8 times)
BG (7 times)
PE (7 times)
PG (7 times)
1979 Treatment of mucopolysaccharidosis: clinical and biochemical aspects of leucocyte transfusion as compared with plasma infusion in patients with Hurler's and Scheie's syndromes.
60  pattern identification
(32 times)
Complementary Therapies
(18 times)
TKM (6 times)
CM (3 times)
DP (3 times)
1998 Impaired word-stem completion priming but intact perceptual identification priming with novel words: evidence from the amnesic patient H.M.
61  photoinitiator
(31 times)
Biomedical Engineering
(6 times)
PEGDA (5 times)
CP (2 times)
DC (2 times)
2006 Stereolithography of three-dimensional bioactive poly(ethylene glycol) constructs with encapsulated cells.
62  primary immunodeficiency
(31 times)
Allergy and Immunology
(20 times)
JMCN (8 times)
IVIG (5 times)
JMF (5 times)
1999 [Computerized tomography of the lungs in patients with congenital immunodeficiency. Comparison with clinicoradiologic assessment].
63  peak-interval
(30 times)
Behavioral Sciences
(14 times)
FI (5 times)
DA (4 times)
MAP (2 times)
1996 Cyclic responding by pigeons on the peak timing procedure.
64  penetration index
(30 times)
Pulmonary Medicine
(11 times)
SPECT (4 times)
DTPA (2 times)
MMAD (2 times)
1986 Radioaerosol assessment of mucociliary clearance: towards definition of a normal range.
65  plasmin inhibition
(30 times)
Vascular Diseases
(14 times)
PAI (17 times)
PAA (16 times)
tPA (9 times)
1988 Great variation in the response of tissue plasminogen activator activity, plasminogen activator inhibition and plasmin inhibition to endotoxin, aspirin and endotoxin after administration of aspirin.
66  path integration
(29 times)
Biology
(8 times)
AD (3 times)
HD (2 times)
LDA (2 times)
1988 Apnea-onset definition significantly affects pneumogram results.
67  placental insufficiency
(29 times)
Obstetrics
(6 times)
IUGR (9 times)
GSIS (3 times)
FGR (2 times)
1994 [The mechanisms of the development of pregnancy complications in hypertension and glomerulonephritis].
68  perfusion imaging
(28 times)
Neurology
(15 times)
DWI (22 times)
MCA (4 times)
MRA (4 times)
1998 A novel endothelin antagonist, A-127722, attenuates ischemic lesion size in rats with temporary middle cerebral artery occlusion: a diffusion and perfusion MRI study.
69  Pietrain
(28 times)
Veterinary Medicine
(10 times)
DU (6 times)
DUPI (3 times)
LR (3 times)
2002 Variation in clinical and parasitological traits in Pietrain and Meishan pigs infected with Sarcocystis miescheriana.
70  postural instability
(28 times)
Neurology
(14 times)
PD (22 times)
UPDRS (4 times)
BBS (3 times)
2002 Postural instability in idiopathic Parkinson's disease: the role of medication and unilateral pallidotomy.
71  pancreatic islets
(27 times)
Transplantation
(7 times)
GK (3 times)
MRI (3 times)
BN (2 times)
1999 [Odontogenic focus as the etiology of cerebral ischemia].
72  Pearl Index
(27 times)
Reproductive Medicine
(17 times)
DRSP (6 times)
CI (5 times)
EE (5 times)
1993 Prospective European multi-center study of natural family planning (1989-1992): interim results. The European Natural Family Planning Study Groups.
73  prostate index
(27 times)
Pharmacology
(8 times)
BPH (19 times)
DHT (8 times)
COX-2 (5 times)
2008 Antidiarrhoeal activity of the ethyl acetate extract of Baphia nitida (Papilionaceae).
74  phototoxic index
(26 times)
Chemistry
(14 times)
PDT (12 times)
ROS (6 times)
PSs (4 times)
1975 Tar photoxicity and phototherapy for psoriasis.
75  protein intake
(26 times)
Nutritional Sciences
(9 times)
EI (4 times)
BMI (3 times)
IBW (3 times)
1987 Adequacy studies of fistula single-needle dialysis.
76  proximal intestine
(26 times)
Allergy and Immunology
(19 times)
DI (21 times)
MI (18 times)
TOR (9 times)
1993 Tissue distribution of microsomal cytochrome P-450 monooxygenases and their inducibility by phenobarbital in the insecticide resistant LPR strain of house fly, Musca domestica L.
77  Padua Inventory
(25 times)
Therapeutics
(11 times)
OCD (12 times)
BDI (4 times)
MOCI (4 times)
1992 Obsessions and compulsions: dimensional structure, reliability, convergent and divergent validity of the Padua Inventory.
78  pharmaceutical interventions
(25 times)
Pharmacy
(9 times)
DRP (3 times)
ME (2 times)
QoL (2 times)
2001 [Pharmacologic interactions in chronic treatments: corrective measures for its prevention in a basic area of rural health].
79  periductal infiltrating
(24 times)
General Surgery
(13 times)
MF (23 times)
ICC (19 times)
IG (12 times)
2001 Predictive factors for long-term survival in patients with intrahepatic cholangiocarcinoma.
80  policy iteration
(24 times)
Neural Networks (Computer)
(14 times)
RL (7 times)
ADP (4 times)
HJB (4 times)
2013 A policy iteration approach to online optimal control of continuous-time constrained-input systems.
81  post-intervention
(24 times)
Vascular Diseases
(3 times)
BL (5 times)
FU (2 times)
ITS (2 times)
1999 One year follow-up of an emergency department protocol for abused women.
82  prescribing information
(24 times)
Pharmacy
(4 times)
AEs (4 times)
AE (2 times)
CKD (2 times)
2003 Patient-reported utilization patterns of fentanyl transdermal system and oxycodone hydrochloride controlled-release among patients with chronic nonmalignant pain.
83  pallidal index
(23 times)
Toxicology
(14 times)
Mn (13 times)
MRI (13 times)
GP (5 times)
1996 Increased blood manganese in cirrhotic patients: relationship to pallidal magnetic resonance signal hyperintensity and neurological symptoms.
84  performance-intensity
(22 times)
Audiology
(16 times)
MSTMs (2 times)
PSI (2 times)
SNRs (2 times)
1977 Use of performance-intensity functions for diagnosis.
85  phospholipid
(22 times)
Pharmacology
(5 times)
KA (2 times)
NA (2 times)
NMDA (2 times)
1986 Stimulation by noradrenaline of inositol phospholipid breakdown in the rat hippocampus: effect of the ambient potassium concentration.
86  phytochemical index
(22 times)
Nutritional Sciences
(8 times)
CI (3 times)
BMI (2 times)
CIs (2 times)
2002 Photoprotection in water-stressed plants of durum wheat (Triticum turgidum var. durum): changes in chlorophyll fluorescence, spectral signature and photosynthetic pigments.
87  post-institutionalized
(22 times)
Psychology
(13 times)
NA (7 times)
ADHD (2 times)
DSE (2 times)
2009 Postinstitutionalized children's development: growth, cognitive, and language outcomes.
88  proliferation
(22 times)
Neoplasms
(8 times)
AI (14 times)
MI (4 times)
5-FU (1 time)
1996 Mitotic index and lymphocyte proliferation kinetics in testing the genotoxicity of chemical agents.
89  pulvinar
(22 times)
Neurology
(15 times)
PL (9 times)
PM (5 times)
SC (5 times)
1976 The cortical projections of the inferior pulvinar and adjacent lateral pulvinar in the rhesus monkey (Macaca mulatta): an autoradiographic study.
90  postimplantation
(21 times)
Parasitology
(4 times)
SEM (3 times)
APO (2 times)
LPS (2 times)
1983 Terminal airway embryology of the delphinid porpoises, Stenella attenuata and S. longirostris.
91  package insert
(20 times)
Pharmacology
(4 times)
FDA (3 times)
ACIP (1 time)
ADEs (1 time)
1991 Attitude of the public toward technical package inserts for medication information in Belgium.
92  parametrial involvement
(20 times)
Neoplasms
(10 times)
LVSI (7 times)
DSI (5 times)
CC (3 times)
2001 How important is removal of the parametrium at surgery for carcinoma of the cervix?
93  protein I
(20 times)
Communicable Diseases
(8 times)
LPS (3 times)
NHS (2 times)
CMP-NANA (1 time)
1982 125I-peptide mapping of protein III isolated from four strains of Neisseria gonorrhoeae.
94  psychodynamic-interpersonal
(20 times)
Psychology
(15 times)
CB (13 times)
CPPS (5 times)
ICC (2 times)
1995 Effects of treatment duration and severity of depression on the maintenance of gains after cognitive-behavioral and psychodynamic-interpersonal psychotherapy.
95  Prandtl-Ishlinskii
(19 times)
Biomedical Engineering
(4 times)
DIAPI (1 time)
FLSs (1 time)
I-M (1 time)
2009 Development of a piezo-actuated micro-teleoperation system for cell manipulation.
96  primary infection
(19 times)
Acquired Immunodeficiency Syndrome
(4 times)
si (3 times)
CI (2 times)
NPI (2 times)
1997 Course of specific T lymphocyte cytotoxicity, plasma and cellular viral loads, and neutralizing antibody titers in 17 recently seroconverted HIV type 1-infected patients.
97  product information
(19 times)
Drug Therapy
(7 times)
MIMS (4 times)
ADRs (2 times)
AEs (2 times)
2003 Dosing information for paediatric patients: are they really "therapeutic orphans"?
98  purchase intent
(19 times)
Nutritional Sciences
(7 times)
OL (4 times)
ECP (2 times)
HBI (2 times)
2011 Comparison of physicochemical characteristics and consumer perception of rice samples with different countries of origin and prices.
99  patellar instability
(18 times)
Orthopedics
(8 times)
MRI (7 times)
TD (5 times)
LTI (4 times)
2000 Patellar instability: assessment on MR images by measuring the lateral trochlear inclination-initial experience.
100  postischemia
(18 times)
Brain
(6 times)
GBI (3 times)
ERG (2 times)
ND (2 times)
1975 Global ischemia in dogs: cerebrovascular CO2 reactivity and autoregulation.