| IF | idiopathic fibroplasia; idiopathic flushing; immersion foot; immunofluorescence; indirect fluorescen... |
|---|---|
| IFP | inflammatory fibroid polyp; insulin, compound F [hydrocortisone], prolactin; intermediate filament p... |
| IMF | idiopathic myelofibrosis; immunofluorescence; intermaxillary fixation; intermediate filament |
| PHF | paired helical filament; personal hygiene facility |
| IMF | intermediate filament |
|---|---|
| KIF | keratin intermediate filament |
| spermatic filament | A spermatozoon, especially the tail of a spermatozoon. (05 Mar 2000) |
|---|---|
| intermediate filament | <cell biology> A class of cytoplasmic filaments of animal cells so named originally because their diameter (nominally 10 nm) in muscle cells was intermediate between thick and thin filaments. Unlike microfilaments and microtubules, the protein sub units of intermediate filaments show considerable diversity and tissue specificity. See: cytokeratins, desmin, glial fibrillary acidic protein, neurofilament proteins, nestin and vimentin (18 Nov 1997) |
| intermediate filament proteins | Filaments 7-11 nm in diameter found in the cytoplasm of all cells. Many specific proteins belong to this group, e.g., desmin, vimentin, prekeratin, decamin, skeletin, neurofilin, neurofilament protein, and glial fibrillary acid protein. (12 Dec 1998) |
| thick filament | <cell biology> Bipolar myosin II filaments (12-14nm diameter, 1.6m long) found in striated muscle. Myosin filaments elsewhere are often referred to as thick filaments, although their length may be considerably less. The myosin heads project from the thick filament in a regular fashion. There is a central bare zone without projecting heads, the core being formed from antiparallel arrays of LMM regions of the myosin heavy chains. Thick filaments will self assemble in vitro under the right ionic conditions. (18 Nov 1997) |
| thin filament | Filaments 7-9nm diameter attached to the Z discs of striated muscle, have opposite polarity in each half sarcomere. Built of F actin with associated tropomyosin and troponin. (18 Nov 1997) |
| Z filament | The thin zig-zag structure at the Z line of striated muscle fibres to which the actin filament's attach. (05 Mar 2000) |
| filament | See: thick filaments, thin filaments, intermediate filaments and microfilaments. (18 Nov 1997) |
| filament-nonfilament count | A differential count of the number of neutrophils showing nuclear division and those showing no such division. (05 Mar 2000) |
| filament polymorphonuclear leukocyte | Any mature polymorphonuclear leukocyte, especially a neutrophilic leukocyte, in which the lobes of the nucleus are interconnected with a thin strand or filament of chromatin. (05 Mar 2000) |
| adaptor hypothesis | A hypothesis, proposed by F.H.C. Crick, that an adaptor molecule must be present between the information-containing DNA and the protein being synthesised. (05 Mar 2000) |
| altered self hypothesis | The hypothesis that the T-cell receptor in MHC mediated phenomena recognises a syngeneic MHC Class I or Class II molecule after modification by a virus or certain chemicals. See: MHC restriction. (18 Nov 1997) |
| alternative hypothesis | In Neyman-Pearson testing of a hypothesis, the hypothesis or family of hypotheses about the numerical value of a parameter if and only if the null hypothesis is rejected as untenable. (05 Mar 2000) |
| autocrine hypothesis | That tumour cells containing viral oncogenes may have encoded a growth factor, normally produced by other cell types, and thereby produce the factor autonomously, leading to uncontrolled proliferation. (05 Mar 2000) |
| Avogadro's hypothesis | <physics> The hypothesis that equal volumes of two different gases at the same temperature and pressure contain the same number of molecules. (02 Jan 1998) |
| Bayesian hypothesis | An array of surmised values of a parameter to be severally explored in the light of a current set of data, with logical symmetry being preserved among all. The merits of each hypothesis entertained are based on quantity, the prior probability. The probability of the data conditional on the hypothesis is computed as the conditional probability for each; the product of the two for each hypothesis is the joint probability, and the ratio of each joint probability to the sum of all the joint probabilities is the posterior probability for that hypothesis. Unlike the Neyman-Pearson test of hypotheses, the answer is a statement about the hypothesis, not about the sample conditional on the hypothesis. No hypothesis is preferred or prevails by default. The procedure may be applied recursively any number of times, as the data becomes available. (05 Mar 2000) |