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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
(3200 times)
Cell Biology
(351 times)
ROS (246 times)
FITC (183 times)
FCM (115 times)
1976 Rapid staining methods for analysis of deoxyribonucleic acid and protein in mammalian cells.
phosphatidylinositol
(3183 times)
Biochemistry
(1099 times)
PC (666 times)
PE (498 times)
PS (407 times)
1966 Fatty acids in phospholipids isolated from human red cells.
pulsatility index
(2672 times)
Obstetrics
(759 times)
RI (903 times)
MCA (325 times)
PSV (235 times)
1980 The relationship between ultrasonic pulsatility index and proximal arterial stenosis in a canine model.
protease inhibitor
(2314 times)
Acquired Immunodeficiency Syndrome
(664 times)
NNRTI (404 times)
ART (283 times)
HAART (283 times)
1970 Protease inhibitor (Pi) phenotypes in chromosome aberrations.
plaque index
(1224 times)
Dentistry
(853 times)
GI (680 times)
PD (504 times)
CAL (382 times)
1985 The application of a collagen stabilizer to the gingiva of the beagle dog. Effect on ligature-induced periodontal disease.
phosphoinositide
(933 times)
Biochemistry
(198 times)
PKC (62 times)
PLC (60 times)
IP (32 times)
1975 [Inositol-containing phospholipids in rat brain and liver].
proliferation index
(714 times)
Neoplasms
(156 times)
AI (124 times)
PCNA (73 times)
FCM (54 times)
1975 [The effect of diphtheria toxin on proliferation of a transplantable culture of human amnion cells].
pelvic incidence
(458 times)
Orthopedics
(249 times)
LL (291 times)
PT (277 times)
SS (224 times)
2002 Relation between the pelvis and the sagittal profile in adolescent idiopathic scoliosis: the influence of curve type.
polyimide
(347 times)
Biomedical Engineering
(84 times)
PAA (23 times)
XPS (19 times)
SEM (15 times)
1999 Material-independent determination of anchoring properties on rubbed polyimide surfaces.
10  perfusion index
(200 times)
Anesthesiology
(34 times)
PVI (18 times)
HR (16 times)
MAP (12 times)
0 Masimo Perfusion Index Versus Doppler for Tourniquet Effectiveness Monitoring.
11  prognostic index
(175 times)
Neoplasms
(74 times)
NLR (29 times)
OS (28 times)
PLR (24 times)
1982 A modified prognostic index based upon nutritional measurements.
12  ponderal index
(158 times)
Pediatrics
(37 times)
BMI (39 times)
BW (21 times)
SGA (17 times)
1978 Fetal malnutrition: an experimental study of its consequences on infant development in two caregiving environments.
13  Pneumatosis intestinalis
(154 times)
General Surgery
(27 times)
CT (23 times)
PVG (13 times)
HPVG (6 times)
1983 Pneumatosis intestinalis in childhood leukaemia. Report of a case with gas in the portal vein and review of the literature.
14  protective index
(136 times)
Chemistry
(19 times)
MES (32 times)
scPTZ (12 times)
i.p (6 times)
1979 Eye movements simultaneously recorded by electrooculographic and photoelectric methods.
15  proportional-integral
(128 times)
Biomedical Engineering
(63 times)
PD (6 times)
SMC (5 times)
PID (4 times)
1988 Expert-system-based fuzzy control of arterial pressure by drug infusion.
16  proactive interference
(124 times)
Psychology
(71 times)
WM (14 times)
RI (5 times)
CVLT (4 times)
1971 The effects of practice trials and prior learning on motor memory.
17  peak intensity
(119 times)
Medicine
(25 times)
AUC (61 times)
CEUS (59 times)
TTP (54 times)
2002 Assessment of coronary stenoses of graded severity by myocardial contrast echocardiography.
18  prediction interval
(113 times)
Medicine
(14 times)
CI (20 times)
RT (8 times)
OR (6 times)
1975 Relationship of reaction time to deceleration and variability of heart rate in nonretarded and retarded persons.
19  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.
20  pulse interval
(106 times)
Physiology
(37 times)
HR (24 times)
BRS (22 times)
LF (20 times)
1975 Reduced baroreflex sensitivity with volume loading in conscious dogs.
21  pancreatic insufficiency
(101 times)
Pediatrics
(43 times)
CF (80 times)
PS (32 times)
CFTR (10 times)
1976 Quantitative evaluation of serum pancreatic isoamylases in cystic fibrosis.
22  pain intensity
(98 times)
Neurology
(19 times)
PR (13 times)
AEs (10 times)
VAS (10 times)
1979 Comparison of the analgesic dose-effect relationships of nefopam and oxycodone in postoperative pain.
23  phagocytic index
(95 times)
Allergy and Immunology
(30 times)
PA (16 times)
NBT (8 times)
SOD (8 times)
1976 The effect of cytotoxic drugs on neutrophil phagocytosis in vitro and in patients with acute myelogenous leukaemia.
24  PISTILLATA
(91 times)
Botany
(43 times)
AP3 (60 times)
AG (15 times)
AP1 (10 times)
1991 The FLO10 Gene Product Regulates the Expression Domain of Homeotic Genes AP3 and PI in Arabidopsis Flowers.
25  plant introduction
(91 times)
Genetics
(24 times)
SCN (9 times)
QTL (6 times)
MAS (4 times)
1984 Abscisic Acid and its relationship to seed filling in soybeans.
26  polydispersity index
(89 times)
Pharmacology
(34 times)
EE (18 times)
ZP (18 times)
DSC (12 times)
2001 A new nerve guide conduit material composed of a biodegradable poly(phosphoester).
27  principal investigator
(87 times)
Medicine
(10 times)
NIH (8 times)
EM (4 times)
IRB (4 times)
1985 National Institutes of Health phase I, Small Business Innovation Research applications: fiscal year 1983 results.
28  primary insomnia
(83 times)
Psychophysiology
(35 times)
PSQI (12 times)
PSG (10 times)
GS (8 times)
2001 Primary versus secondary insomnia in older adults: subjective sleep and daytime functioning.
29  proinsulin
(79 times)
Endocrinology
(41 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.
30  performance improvement
(77 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.
31  pulsatility
(70 times)
Diagnostic Imaging
(17 times)
RI (69 times)
MCA (7 times)
TCD (6 times)
1990 Uterine and fetal umbilical artery flow velocity waveforms in normal first trimester pregnancies.
32  parallel imaging
(69 times)
Diagnostic Imaging
(47 times)
SNR (17 times)
CS (15 times)
MRI (9 times)
2004 Current concepts and advances in clinical parallel magnetic resonance imaging.
33  performance index
(65 times)
Veterinary Medicine
(11 times)
RCs (5 times)
OEC (3 times)
PSII (3 times)
1980 Classification of abnormal children: discrimination learning ability.
34  Pain Interference
(63 times)
Orthopedics
(29 times)
PROMIS (49 times)
PF (46 times)
MCID (10 times)
2009 The relationship between subjective reports of fatigue and executive control in multiple sclerosis.
35  pathogen inactivation
(53 times)
Hematology
(45 times)
PCs (13 times)
PLT (10 times)
RBC (6 times)
2001 Reducing the risk of blood transfusion.
36  peri-implantitis
(49 times)
Dentistry
(33 times)
CP (10 times)
p-iM (5 times)
PM (5 times)
2000 Aspartate aminotransferase activity in crevicular fluid from dental implants.
37  pressure injury
(49 times)
Nursing
(25 times)
ICU (4 times)
CI (3 times)
SCI (3 times)
2014 The role of patients in pressure injury prevention: a survey of acute care patients.
38  pulmonary insufficiency
(49 times)
Cardiology
(26 times)
TOF (22 times)
RV (16 times)
CMR (6 times)
1977 [Validity of thermodilution cardiac output determination in the presence of pulmonary insufficiency (author's transl)].
39  peripheral iridotomy
(47 times)
Ophthalmology
(33 times)
IOP (18 times)
ICL (4 times)
PACG (4 times)
1977 Peripheral iridectomy in closed angle glaucoma-- late complications.
40  pars intercerebralis
(43 times)
Neurology
(10 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.).
41  polyisoprene
(43 times)
Chemistry
(14 times)
PS (14 times)
PDMS (3 times)
PFS (3 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.
42  Pacific Islander
(42 times)
Public Health
(10 times)
AA (5 times)
NH (5 times)
BMI (4 times)
1981 Hospital admissions for asthma in children: a prospective study.
43  postirradiation
(39 times)
Neoplasms
(8 times)
Gy (2 times)
IL (2 times)
ABC (1 time)
1977 Mucormycotic hepatic lesions resembling bacillary hemoglobinuria infarcts in irradiated calves.
44  posterior interval
(36 times)
Environmental Health
(21 times)
CAPES (3 times)
EC (3 times)
OCM (3 times)
2004 Ozone and short-term mortality in 95 US urban communities, 1987-2000.
45  paternity index
(35 times)
Jurisprudence
(21 times)
PE (5 times)
PM (5 times)
PD (4 times)
1980 Numerical expression of paternity test results using predetermined indexes.
46  Periodontal Index
(34 times)
Dentistry
(24 times)
GI (6 times)
CPITN (3 times)
PPD (3 times)
1974 Periodontal disease among youths 12-17 years, United States.
47  permeability index
(33 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.
48  progression index
(33 times)
Neurology
(15 times)
MS (22 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  plasma insulin
(32 times)
Endocrinology
(8 times)
PE (7 times)
PG (7 times)
BG (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.
50  post-injury
(32 times)
Neurology
(16 times)
SCI (7 times)
TBI (3 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].
51  pulse inversion
(32 times)
Diagnostic Imaging
(6 times)
CTR (7 times)
US (5 times)
CEUS (3 times)
1995 Phase-inversion cellulose acetate membranes for suppression of protein interferences in anodic stripping voltammetry.
52  pyrrole-imidazole
(32 times)
Neoplasms
(6 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.
53  probability interval
(29 times)
Veterinary Medicine
(15 times)
ELISA (3 times)
OR (3 times)
BDD (2 times)
2000 Decision analysis of tamoxifen for the prevention of invasive breast cancer.
54  penetration index
(28 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.
55  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.
56  Pietrain
(27 times)
Veterinary Medicine
(12 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.
57  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.
58  pulmonary infection
(26 times)
Pulmonary Medicine
(5 times)
PE (4 times)
AFL (3 times)
MI (3 times)
1988 [Assessment of interaction between the left and right ventricles using pressure-volume loops in various heart diseases].
59  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.
60  peak-interval
(25 times)
Behavioral Sciences
(11 times)
FI (5 times)
DA (4 times)
MAP (2 times)
1996 Cyclic responding by pigeons on the peak timing procedure.
61  photoionization
(25 times)
Chemistry Techniques, Analytical
(12 times)
EI (6 times)
CI (4 times)
MS (4 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.
62  pattern identification
(24 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.
63  posterior insula
(24 times)
Brain
(6 times)
AI (12 times)
dAI (5 times)
RSFC (5 times)
2014 You are the danger: attenuated insula response in methamphetamine users during aversive interoceptive decision-making.
64  proximal intestine
(23 times)
Zoology
(18 times)
DI (18 times)
MI (15 times)
IkappaBalpha (8 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.
65  pallidal index
(22 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.
66  pancreatic islets
(22 times)
Transplantation
(7 times)
GK (3 times)
MRI (3 times)
BN (2 times)
1998 [Odontogenic focus as the etiology of cerebral ischemia].
67  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.
68  physical inactivity
(22 times)
Public Health
(8 times)
PA (5 times)
BMI (4 times)
CI (2 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).
69  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.
70  periductal infiltrating
(21 times)
General Surgery
(14 times)
MF (20 times)
ICC (18 times)
IG (12 times)
2001 Predictive factors for long-term survival in patients with intrahepatic cholangiocarcinoma.
71  post-institutionalized
(21 times)
Psychology
(13 times)
NA (7 times)
ADHD (2 times)
DSE (2 times)
2009 Postinstitutionalized children's development: growth, cognitive, and language outcomes.
72  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.
73  primary immunodeficiency
(21 times)
Allergy and Immunology
(13 times)
JMCN (5 times)
IVIG (4 times)
SCIG (3 times)
1999 [Computerized tomography of the lungs in patients with congenital immunodeficiency. Comparison with clinicoradiologic assessment].
74  prostatic index
(21 times)
Pharmacology
(7 times)
BPH (14 times)
COX-2 (5 times)
DHT (5 times)
2008 Antidiarrhoeal activity of the ethyl acetate extract of Baphia nitida (Papilionaceae).
75  pulvinar
(21 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.
76  Pearl Index
(20 times)
Reproductive Medicine
(12 times)
CI (5 times)
COC (4 times)
EE (4 times)
1993 Prospective European multi-center study of natural family planning (1989-1992): interim results. The European Natural Family Planning Study Groups.
77  performance-intensity
(20 times)
Audiology
(15 times)
MSTMs (2 times)
PSI (2 times)
SNRs (2 times)
1977 Use of performance-intensity functions for diagnosis.
78  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.
79  prescribing information
(19 times)
Pharmacy
(3 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.
80  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.
81  protein intake
(18 times)
Nutritional Sciences
(7 times)
ALB (2 times)
BMI (2 times)
BS (2 times)
1987 Adequacy studies of fistula single-needle dialysis.
82  psychodynamic-interpersonal
(18 times)
Psychology
(13 times)
CB (11 times)
CPPS (3 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.
83  placental insufficiency
(17 times)
Obstetrics
(6 times)
IUGR (8 times)
2SD (1 time)
ADR-block (1 time)
1994 [The mechanisms of the development of pregnancy complications in hypertension and glomerulonephritis].
84  postural instability
(17 times)
Neurology
(9 times)
PD (11 times)
BBS (3 times)
COP (2 times)
2002 Postural instability in idiopathic Parkinson's disease: the role of medication and unilateral pallidotomy.
85  parametrial involvement
(16 times)
Neoplasms
(10 times)
LVSI (6 times)
DSI (4 times)
CI (3 times)
2002 How important is removal of the parametrium at surgery for carcinoma of the cervix?
86  path integration
(16 times)
Biology
(7 times)
VE (2 times)
AD (1 time)
aMCI (1 time)
1999 Calibration of vector navigation in desert ants.
87  photoinitiator
(16 times)
Biomedical Engineering
(3 times)
DC (2 times)
BisGMA (1 time)
BLL (1 time)
2006 Stereolithography of three-dimensional bioactive poly(ethylene glycol) constructs with encapsulated cells.
88  postinstillation
(16 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.
89  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.
90  pristinamycin I
(16 times)
Microbiology
(4 times)
PII (7 times)
ptr (3 times)
EMSAs (2 times)
1993 [Evaluation of in vitro activity of pristinamycin against Haemophilus influenzae].
91  product information
(16 times)
Drug Therapy
(5 times)
MIMS (4 times)
AEs (2 times)
CMI (2 times)
2003 Dosing information for paediatric patients: are they really "therapeutic orphans"?
92  AnnexinV-propidium iodide
(15 times)
Biochemistry
(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.
93  package insert
(15 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.
94  peroxidizability index
(15 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.
95  psychophysiological insomnia
(15 times)
Psychophysiology
(8 times)
CBT-I (4 times)
GS (3 times)
NS (3 times)
1995 [Polysomnographic structure of subjective "awake" and "asleep" nocturnal segments].
96  pathogenicity island
(14 times)
Microbiology
(8 times)
ORFs (2 times)
UPEC (2 times)
AIV (1 time)
1998 The gene for toxic shock toxin is carried by a family of mobile pathogenicity islands in Staphylococcus aureus.
97  postinspiratory
(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.
98  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.
99  patient involvement
(13 times)
Psychology, Educational
(2 times)
HTA (2 times)
ATL (1 time)
BLT (1 time)
2000 Parent Involvement in School Conceptualizing Multiple Dimensions and Their Relations with Family and Demographic Risk Factors.
100  permanent implant
(13 times)
Transplantation
(5 times)
TE (6 times)
BVAD (3 times)
BMI (2 times)
1998 In vivo evaluation of the miniaturized Gyro centrifugal pump as an implantable ventricular assist device.