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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)
phosphatidylinositol
(3101 times)
Biochemistry
(1085 times)
PC (637 times)
PE (469 times)
PS (389 times)
1966 Fatty acids in phospholipids isolated from human red cells.
propidium iodide
(2781 times)
Cell Biology
(312 times)
ROS (195 times)
FITC (152 times)
FCM (109 times)
1976 Rapid staining methods for analysis of deoxyribonucleic acid and protein in mammalian cells.
pulsatility index
(2419 times)
Obstetrics
(699 times)
RI (818 times)
MCA (285 times)
PSV (196 times)
1980 The relationship between ultrasonic pulsatility index and proximal arterial stenosis in a canine model.
postinoculation
(2375 times)
Veterinary Medicine
(971 times)
BVDV (207 times)
ELISA (75 times)
CNS (47 times)
1967 Sequential formation of vaccinia virus proteins and viral deoxyribonucleic acid replication.
protease inhibitor
(2169 times)
Acquired Immunodeficiency Syndrome
(639 times)
NNRTI (377 times)
HAART (280 times)
ART (250 times)
1970 Protease inhibitor (Pi) phenotypes in chromosome aberrations.
plaque index
(1017 times)
Dentistry
(727 times)
GI (585 times)
PD (413 times)
CAL (310 times)
1985 The application of a collagen stabilizer to the gingiva of the beagle dog. Effect on ligature-induced periodontal disease.
phosphoinositide
(919 times)
Biochemistry
(196 times)
PKC (62 times)
PLC (60 times)
IP (32 times)
1975 [Inositol-containing phospholipids in rat brain and liver].
proliferation index
(692 times)
Neoplasms
(153 times)
AI (123 times)
PCNA (72 times)
FCM (54 times)
1975 [The effect of diphtheria toxin on proliferation of a transplantable culture of human amnion cells].
pelvic incidence
(305 times)
Orthopedics
(183 times)
PT (189 times)
LL (188 times)
SS (152 times)
2002 Relation between the pelvis and the sagittal profile in adolescent idiopathic scoliosis: the influence of curve type.
10  polyimide
(242 times)
Biomedical Engineering
(69 times)
PAA (19 times)
XPS (15 times)
PET (11 times)
1999 Material-independent determination of anchoring properties on rubbed polyimide surfaces.
11  perfusion index
(159 times)
Anesthesiology
(31 times)
PVI (17 times)
HR (12 times)
MAP (10 times)
1986 Cortex perfusion index: a sensitive detector of acute rejection crisis in transplanted kidneys.
12  ponderal index
(146 times)
Pediatrics
(34 times)
BMI (36 times)
BW (20 times)
SGA (15 times)
1978 Fetal malnutrition: an experimental study of its consequences on infant development in two caregiving environments.
13  prognostic index
(137 times)
Neoplasms
(57 times)
NLR (22 times)
OS (18 times)
PLR (18 times)
1982 A modified prognostic index based upon nutritional measurements.
14  Pneumatosis intestinalis
(136 times)
General Surgery
(26 times)
CT (20 times)
PVG (11 times)
NEC (6 times)
1983 Pneumatosis intestinalis in childhood leukaemia. Report of a case with gas in the portal vein and review of the literature.
15  protective index
(123 times)
Chemistry
(19 times)
MES (31 times)
scPTZ (13 times)
i.p (6 times)
1979 Eye movements simultaneously recorded by electrooculographic and photoelectric methods.
16  proactive interference
(120 times)
Psychology
(69 times)
WM (14 times)
CVLT (4 times)
RI (4 times)
1971 The effects of practice trials and prior learning on motor memory.
17  pars intermedia
(112 times)
Endocrinology
(49 times)
PD (31 times)
PPD (24 times)
RPD (23 times)
1975 The effect of apomorphine and ergocriptine on the release of MSH by the pars intermedia of Rana pipiens.
18  proportional-integral
(109 times)
Biomedical Engineering
(55 times)
PD (5 times)
SMC (4 times)
AFM (3 times)
1988 Expert-system-based fuzzy control of arterial pressure by drug infusion.
19  peak intensity
(98 times)
Diagnostic Imaging
(19 times)
AUC (51 times)
CEUS (45 times)
TTP (45 times)
2002 Assessment of coronary stenoses of graded severity by myocardial contrast echocardiography.
20  pulse interval
(95 times)
Physiology
(37 times)
BRS (20 times)
HR (20 times)
SAP (19 times)
1975 Reduced baroreflex sensitivity with volume loading in conscious dogs.
21  prediction interval
(93 times)
Medicine
(9 times)
CI (9 times)
RT (8 times)
OR (4 times)
1975 Relationship of reaction time to deceleration and variability of heart rate in nonretarded and retarded persons.
22  pancreatic insufficiency
(92 times)
Pediatrics
(36 times)
CF (74 times)
PS (31 times)
CFTR (10 times)
1976 Quantitative evaluation of serum pancreatic isoamylases in cystic fibrosis.
23  PISTILLATA
(86 times)
Botany
(40 times)
AP3 (60 times)
AG (15 times)
AP1 (9 times)
1991 The FLO10 Gene Product Regulates the Expression Domain of Homeotic Genes AP3 and PI in Arabidopsis Flowers.
24  phagocytic index
(84 times)
Allergy and Immunology
(23 times)
PA (12 times)
NBT (6 times)
SOD (6 times)
1976 The effect of cytotoxic drugs on neutrophil phagocytosis in vitro and in patients with acute myelogenous leukaemia.
25  pain intensity
(83 times)
Neurology
(19 times)
PR (12 times)
VAS (10 times)
AEs (9 times)
1979 Comparison of the analgesic dose-effect relationships of nefopam and oxycodone in postoperative pain.
26  polydispersity index
(76 times)
Pharmacology
(30 times)
EE (16 times)
ZP (16 times)
DSC (12 times)
2001 A new nerve guide conduit material composed of a biodegradable poly(phosphoester).
27  proinsulin
(74 times)
Endocrinology
(40 times)
IRI (23 times)
IGT (9 times)
TI (9 times)
1981 Effects of liver and kidney on high molecular weight immunoreactive insulin (HWIRI), proinsulin (PI) and insulin (I) in man.
28  performance improvement
(67 times)
Health Services
(20 times)
CME (9 times)
ED (3 times)
HF (2 times)
1994 The Agenda for Change: performance focus alters JCAHO's survey process.
29  principal investigator
(67 times)
Medicine
(8 times)
NIH (6 times)
EM (4 times)
IRB (4 times)
1985 National Institutes of Health phase I, Small Business Innovation Research applications: fiscal year 1983 results.
30  pulsatility
(65 times)
Diagnostic Imaging
(16 times)
RI (64 times)
MCA (6 times)
TCD (5 times)
1990 Uterine and fetal umbilical artery flow velocity waveforms in normal first trimester pregnancies.
31  primary insomnia
(64 times)
Psychophysiology
(34 times)
PSG (10 times)
GS (8 times)
GSC (8 times)
2001 Primary versus secondary insomnia in older adults: subjective sleep and daytime functioning.
32  plant introduction
(62 times)
Genetics
(24 times)
QTL (5 times)
SCN (5 times)
BAC (3 times)
1984 Abscisic Acid and its relationship to seed filling in soybeans.
33  parallel imaging
(60 times)
Diagnostic Imaging
(41 times)
SNR (15 times)
CS (12 times)
DWI (7 times)
2004 Current concepts and advances in clinical parallel magnetic resonance imaging.
34  performance index
(55 times)
Veterinary Medicine
(10 times)
RCs (4 times)
OEC (3 times)
PSII (3 times)
1980 Classification of abnormal children: discrimination learning ability.
35  pulmonary insufficiency
(44 times)
Cardiology
(23 times)
TOF (20 times)
RV (13 times)
PS (6 times)
1977 [Validity of thermodilution cardiac output determination in the presence of pulmonary insufficiency (author's transl)].
36  peripheral iridotomy
(40 times)
Ophthalmology
(29 times)
IOP (17 times)
ICL (4 times)
AS-OCT (3 times)
1977 Peripheral iridectomy in closed angle glaucoma-- late complications.
37  pathogen inactivation
(39 times)
Hematology
(32 times)
PCs (10 times)
PLT (9 times)
PLTs (5 times)
2001 Reducing the risk of blood transfusion.
38  peri-implantitis
(39 times)
Dentistry
(26 times)
CP (10 times)
HI (4 times)
p-iM (4 times)
2000 Aspartate aminotransferase activity in crevicular fluid from dental implants.
39  Pacific Islander
(38 times)
Public Health
(10 times)
AA (5 times)
NH (4 times)
BMI (3 times)
1981 Hospital admissions for asthma in children: a prospective study.
40  pars intercerebralis
(38 times)
Cell Biology
(10 times)
PL (10 times)
CA (6 times)
JH (4 times)
1978 Locations and central projections of neurons associated with the retrocerebral neuroendocrine complex of the cockroach Periplaneta americana (L.).
41  postirradiation
(37 times)
Radiology
(8 times)
Gy (2 times)
IL (2 times)
ABC (1 time)
1977 Mucormycotic hepatic lesions resembling bacillary hemoglobinuria infarcts in irradiated calves.
42  polyisoprene
(36 times)
Chemistry
(14 times)
PS (12 times)
TEM (3 times)
bcc (2 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.
43  paternity index
(33 times)
Jurisprudence
(19 times)
PE (5 times)
PM (5 times)
PD (4 times)
1980 Numerical expression of paternity test results using predetermined indexes.
44  Periodontal Index
(33 times)
Dentistry
(23 times)
GI (5 times)
CPITN (3 times)
COPD (2 times)
1974 Periodontal disease among youths 12-17 years, United States.
45  permeability index
(31 times)
General Surgery
(7 times)
BAL (2 times)
CRVO (2 times)
IL-2 (2 times)
1984 Increased airway mucosal permeability of smokers. Relationship to airway reactivity.
46  posterior interval
(31 times)
Environmental Health
(19 times)
CAPES (3 times)
EC (3 times)
OCM (3 times)
2004 Ozone and short-term mortality in 95 US urban communities, 1987-2000.
47  plasma insulin
(29 times)
Endocrinology
(7 times)
BG (6 times)
PE (6 times)
PG (6 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.
48  progression index
(29 times)
Neurology
(15 times)
MS (19 times)
EDSS (13 times)
RR (7 times)
1986 Progression index and disability status in multiple sclerosis: a resurvey of 207 patients in central Poland.
49  pulse inversion
(28 times)
Diagnostic Imaging
(6 times)
CTR (6 times)
US (5 times)
CEUS (2 times)
1995 Phase-inversion cellulose acetate membranes for suppression of protein interferences in anodic stripping voltammetry.
50  penetration index
(27 times)
Pulmonary Medicine
(10 times)
SPECT (4 times)
DTPA (2 times)
MMAD (2 times)
1986 Radioaerosol assessment of mucociliary clearance: towards definition of a normal range.
51  perfusion imaging
(27 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.
52  plasmin inhibition
(27 times)
Vascular Diseases
(13 times)
PAI (17 times)
PAA (16 times)
tPA (8 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.
53  probability interval
(27 times)
Veterinary Medicine
(12 times)
ELISA (3 times)
BRD (2 times)
cELISA (2 times)
2000 Decision analysis of tamoxifen for the prevention of invasive breast cancer.
54  pyrrole-imidazole
(27 times)
Neoplasms
(5 times)
TGF (4 times)
AP-1 (3 times)
TGF-beta1 (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.
55  post-injury
(26 times)
Neurology
(11 times)
SCI (4 times)
TBI (2 times)
3H-T (1 time)
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].
56  Pietrain
(25 times)
Veterinary Medicine
(12 times)
DU (5 times)
DUPI (3 times)
LR (3 times)
2002 Variation in clinical and parasitological traits in Pietrain and Meishan pigs infected with Sarcocystis miescheriana.
57  pattern identification
(23 times)
Complementary Therapies
(15 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.
58  peak-interval
(23 times)
Behavioral Sciences
(11 times)
DA (4 times)
FI (4 times)
MAP (2 times)
1996 Cyclic responding by pigeons on the peak timing procedure.
59  pulmonary infection
(23 times)
Pulmonary Medicine
(4 times)
AFL (3 times)
MI (3 times)
PE (3 times)
1988 [Assessment of interaction between the left and right ventricles using pressure-volume loops in various heart diseases].
60  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.
61  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.
62  Padua Inventory
(21 times)
Therapeutics
(11 times)
OCD (9 times)
BDI (4 times)
MOCI (4 times)
1992 Obsessions and compulsions: dimensional structure, reliability, convergent and divergent validity of the Padua Inventory.
63  pallidal index
(21 times)
Toxicology
(14 times)
Mn (12 times)
MRI (12 times)
GP (5 times)
1996 Increased blood manganese in cirrhotic patients: relationship to pallidal magnetic resonance signal hyperintensity and neurological symptoms.
64  photoionization
(21 times)
Chemistry Techniques, Analytical
(10 times)
EI (4 times)
TOFMS (4 times)
APCI (3 times)
2002 Single photon ionization (SPI) via incoherent VUV-excimer light: robust and compact time-of-flight mass spectrometer for on-line, real-time process gas analysis.
65  post-implantation
(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.
66  performance-intensity
(20 times)
Audiology
(15 times)
MSTMs (2 times)
PSI (2 times)
SNRs (2 times)
1977 Use of performance-intensity functions for diagnosis.
67  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.
68  pulvinar
(20 times)
Neurology
(15 times)
PL (9 times)
MT (4 times)
PM (4 times)
1976 The cortical projections of the inferior pulvinar and adjacent lateral pulvinar in the rhesus monkey (Macaca mulatta): an autoradiographic study.
69  pancreatic islets
(19 times)
Transplantation
(7 times)
GK (3 times)
MRI (3 times)
BN (2 times)
1998 [Odontogenic focus as the etiology of cerebral ischemia].
70  post-institutionalized
(19 times)
Psychology
(12 times)
NA (6 times)
ADHD (2 times)
DSE (2 times)
2009 Postinstitutionalized children's development: growth, cognitive, and language outcomes.
71  physical inactivity
(18 times)
Public Health
(8 times)
BMI (4 times)
PA (3 times)
CAD (1 time)
2004 Joint impact of health risks on health care charges: 7-year follow-up of National Health Insurance beneficiaries in Japan (the Ohsaki Study).
72  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.
73  pressure injury
(18 times)
Nursing
(12 times)
EHR (2 times)
OR (2 times)
PUKAT (2 times)
2014 The role of patients in pressure injury prevention: a survey of acute care patients.
74  Pearl Index
(17 times)
Reproductive Medicine
(11 times)
CI (5 times)
EE (4 times)
COC (3 times)
1993 Prospective European multi-center study of natural family planning (1989-1992): interim results. The European Natural Family Planning Study Groups.
75  periductal infiltrating
(17 times)
General Surgery
(12 times)
MF (16 times)
ICC (15 times)
IG (10 times)
2001 Predictive factors for long-term survival in patients with intrahepatic cholangiocarcinoma.
76  primary immunodeficiency
(17 times)
Allergy and Immunology
(11 times)
IVIG (4 times)
JMCN (4 times)
SCIG (3 times)
1999 [Computerized tomography of the lungs in patients with congenital immunodeficiency. Comparison with clinicoradiologic assessment].
77  prostatic index
(17 times)
Pharmacology
(7 times)
BPH (10 times)
COX-2 (4 times)
DHT (4 times)
2008 Antidiarrhoeal activity of the ethyl acetate extract of Baphia nitida (Papilionaceae).
78  proximal intestine
(17 times)
Allergy and Immunology
(13 times)
DI (12 times)
MI (9 times)
Nrf2 (7 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.
79  posterior insula
(16 times)
Brain
(5 times)
AI (8 times)
dAI (3 times)
FC (3 times)
2014 You are the danger: attenuated insula response in methamphetamine users during aversive interoceptive decision-making.
80  primary isolates
(16 times)
Virology
(12 times)
HIV-1 (6 times)
TCLA (6 times)
PBMC (3 times)
1996 Quantitative model of antibody- and soluble CD4-mediated neutralization of primary isolates and T-cell line-adapted strains of human immunodeficiency virus type 1.
81  pristinamycin I
(16 times)
Molecular Biology
(4 times)
PII (7 times)
ptr (3 times)
EMSAs (2 times)
1993 [Evaluation of in vitro activity of pristinamycin against Haemophilus influenzae].
82  protein intake
(16 times)
Nutritional Sciences
(7 times)
ALB (2 times)
BMI (2 times)
BS (2 times)
1987 Adequacy studies of fistula single-needle dialysis.
83  psychodynamic-interpersonal
(16 times)
Psychology
(11 times)
CB (9 times)
BDI (1 time)
CBT (1 time)
1995 Effects of treatment duration and severity of depression on the maintenance of gains after cognitive-behavioral and psychodynamic-interpersonal psychotherapy.
84  prescribing information
(15 times)
Allergy and Immunology
(3 times)
AEs (3 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.
85  AnnexinV-propidium iodide
(14 times)
Allergy and Immunology
(3 times)
ROS (2 times)
AO (1 time)
ASODN (1 time)
2003 Sensitivity to methylmercury-induced autoimmune disease in mice correlates with resistance to apoptosis of activated CD4+ lymphocytes.
86  pain interference
(14 times)
Psychophysiology
(3 times)
PROMIS (8 times)
PF (5 times)
PS (3 times)
2013 Measurement invariance of the PROMIS pain interference item bank across community and clinical samples.
87  path integration
(14 times)
Biology
(7 times)
VE (2 times)
AD (1 time)
aMCI (1 time)
1999 Calibration of vector navigation in desert ants.
88  peroxidizability index
(14 times)
Nutritional Sciences
(3 times)
PUFA (3 times)
P/S (2 times)
TBARS (2 times)
1979 Effect of dietary fat and vitamin E on mouse lung lipids.
89  post-inspiratory
(14 times)
Physiology
(8 times)
IOS (3 times)
aug-I (2 times)
NMDA (2 times)
1992 Synaptic interaction between medullary respiratory neurones during apneusis induced by NMDA-receptor blockade in cat.
90  postinstillation
(14 times)
Toxicology
(9 times)
BALF (6 times)
BW (5 times)
BAL (2 times)
1994 Mesothelial cell proliferation induced by intrapleural instillation of man-made fibers in rats and hamsters.
91  postural instability
(14 times)
Neurology
(9 times)
PD (9 times)
COP (2 times)
DBS (2 times)
2002 Postural instability in idiopathic Parkinson's disease: the role of medication and unilateral pallidotomy.
92  primary infection
(14 times)
Acquired Immunodeficiency Syndrome
(4 times)
CI (2 times)
si (2 times)
ACV (1 time)
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.
93  placental insufficiency
(13 times)
Obstetrics
(5 times)
IUGR (7 times)
2SD (1 time)
ADR-block (1 time)
1994 [The mechanisms of the development of pregnancy complications in hypertension and glomerulonephritis].
94  psychophysiological insomnia
(13 times)
Psychophysiology
(7 times)
CBT-I (3 times)
GS (3 times)
DSPS (2 times)
1995 [Polysomnographic structure of subjective "awake" and "asleep" nocturnal segments].
95  parametrial involvement
(12 times)
Neoplasms
(9 times)
LVSI (5 times)
AC (2 times)
CI (2 times)
2002 How important is removal of the parametrium at surgery for carcinoma of the cervix?
96  PCNA index
(12 times)
Gastroenterology
(3 times)
PCNA (6 times)
AI (3 times)
HE (2 times)
1997 Immunohistochemical localization of cathepsin D, proliferating cell nuclear antigen and epidermal growth factor receptor in human breast carcinoma analysed by computer image analyser: correlation with histological grade and metastatic behaviour.
97  percutaneous injury
(12 times)
Communicable Diseases
(7 times)
HCWs (3 times)
CI (2 times)
HIV (2 times)
1995 Percutaneous injury analysis: consistent categorization, effective reduction methods, and future strategies.
98  pixel index
(12 times)
Pulmonary Medicine
(5 times)
CT (5 times)
COPD (3 times)
HRCT (3 times)
2001 Automated CT image evaluation of the lung: a morphology-based concept.
99  porcine insulin
(12 times)
Endocrinology
(5 times)
HI (7 times)
ABR (2 times)
AGEs (1 time)
1983 Immunoreactivity of human insulin of recombinant DNA origin.
100  product information
(12 times)
Drug Therapy
(4 times)
MIMS (4 times)
AEs (2 times)
CMI (2 times)
2003 Dosing information for paediatric patients: are they really "therapeutic orphans"?