| IFA | idiopathic fibrosing alveolitis; immunofluorescence assay; immunofluorescent antibody; incomplete Fr... |
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| ILBBB | incomplete left bundle branch block |
| IMP | idiopathic myeloid proliferation; impression; incomplete male pseudohermaphroditism; individual Medi... |
| IRBBB | incomplete right bundle branch block |
| ITFS | iliotibial tract friction syndrome; incomplete testicular feminization syndrome |
| vitelline fistula | A fistula between the umbilicus and the terminal ileum along the course of a persistent vitelline cord. See: Meckel's diverticulum. (05 Mar 2000) |
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| vitelline layer of egg | <zoology> The membrane, usually of protein fibres, immediately outside the plasmalemma of the ovum and the earlier stages of the developing embryo. Its structure and composition vary in differing animal groups. (18 Nov 1997) |
| vitelline membrane | <cell biology> The plasma membrane of the egg. (12 Dec 1998) |
| Vitelline pole | <embryology> The vegetative pole of an ovum. (05 Mar 2000) |
| vitelline reservoir | In cestodes and trematodes, a common chamber receiving vitelline (yolk) material from the two vitelline ducts; the yolk material then passes into the ootype to surround the ovum with nutritive vitelline granules that are enclosed by a characteristically formed eggshell. Synonym: vitelline reservoir. (05 Mar 2000) |
| vitelline vein | <anatomy, vein> A vein returning blood from the yolk sac to the embryo. Synonym: vena vitellina. (05 Mar 2000) |
| vitelline vessels | See: vitelline artery, vitelline vein. (05 Mar 2000) |
| abortion, incomplete | Abortion in which not all the products of conception have been expelled. (12 Dec 1998) |
| incomplete | 1. Not complete; not filled up; not finished; not having all its parts, or not having them all adjusted; imperfect; defective. "A most imperfect and incomplete divine." (Milton) 2. <botany> Wanting any of the usual floral organs; said of a flower. <mathematics> Incomplete equation, an equation some of whose terms are wanting; or one in which the coefficient of some one or more of the powers of the unknown quantity is equal to 0. Origin: L. Incompletus: cf. F. Incomplet. See In- not, and Complete. Source: Websters Dictionary (01 Mar 1998) |
| incomplete abortion | <obstetrics> A clinical situation where the foetus has died but has not been completely expelled from the uterus. (13 Nov 1997) |
| incomplete achromatopsia | Impaired, but not absent, colour vision with less severely reduced visual acuity than in complete achromatopsia; inherited as an autosomal recessive or as an X-linked disorder (blue cone monochromism; pi cone monochromatism ). (05 Mar 2000) |
| incomplete agglutinin | Antibody that binds to antigen but does not induce agglutination. These antibodies are usually of the IgG class and are referred to as incomplete antibody. (05 Mar 2000) |
| incomplete alexia | <clinical sign> A term used to describe a condition in which an individual with normal vision is unable to properly interpret written language. Dyslexia is more common in males and is often first recognised as a reading difficulty in the first grade. Individuals can see and recognise letters but are unable to spell and write words. They have no impairment of object or picture identification. Dyslexia is not related to intelligence and in fact several famous scholars were thought to be dyslexic (for example Albert Einstein, Thomas Edison). The exact cause of dyslexia is unknown. (27 Sep 1997) |
| incomplete antibody | An "incomplete" form of antibody that may coat antigen, but which according to the "lattice theory" does not have a second receptor for attachment to another molecule of antigen; in the case of Rh+ erythrocytes, such an anti-Rh antibody may coat the cells but not cause them to agglutinate in saline; however, agglutination does occur when such coated cells are suspended in serum or other protein media, such as albumin, therefore called serum agglutinin. Synonym: incomplete antibody, inhibiting antibody. (05 Mar 2000) |
| incomplete antigen | <immunology, molecular biology> Could be considered an isolated epitope: although a hapten (by definition) has an antibody directed against it, the hapten alone will not induce an immune response if injected into an animal, it must be conjugated to a carrier (usually a protein). The hapten constitutes a single antigenic determinant, perhaps the best known example is dinitro phenol (DNP) that can be conjugated to BSA and against which antiDNP antibodies are produced (antibodies to the BSA can be adsorbed out). Because the hapten is monovalent, immune complex formation will be blocked if the soluble hapten is present as well as the hapten carrier conjugate (assuming there is more than one hapten per carrier then an immune precipitate can be formed). Competitive inhibition by the soluble small molecule is sometimes referred to as haptenic inhibition and this term has carried over into lectin mediated haemagglutination where monosaccharides are added to try to block haemagglutination: the blocking sugar defines the specificity of the lectin. (18 Nov 1997) |