| MF | magnetic field; meat free; medium frequency; megafarad; membrane filler; merthiolate-formaldehyde [s... |
|---|---|
| MSF | macrophage slowing factor; macrophage spreading factor; Medicins sans Frontieres [Doctors without Bo... |
| PIF | paratoid isoelectric focusing variant protein; peak inspiratory flow; proinsulin-free; prolactin-inh... |
| SPF | skin protection factor; specific-pathogen free; spectrophotofluorometer; S-phase fraction; split pro... |
| TGF | T-cell growth factor; transforming growth factor; tuboglomerular feedback; tumor growth factor |
D factor
| gene products, tax | Transcriptional trans-acting proteins of the promoter elements found in the long-terminal repeats (ltr) of HTLV-I and HTLV-II. The tax (trans-activator x; x is undefined) proteins act by binding to enhancer elements in the ltr. (12 Dec 1998) |
|---|---|
| gene products, vif | A 23 kD regulatory protein important for virion infectivity in HIV. The protein is found in the cytoplasm of HIV-infected cells and is not absolutely required for virion formation. (12 Dec 1998) |
| gene products, vpr | Trans-acting proteins which accelerate virus replication in HIV. The vpr proteins act in trans to increase the levels of HIV specified proteins. Vpr is short for viral protein r, where r is undefined. (12 Dec 1998) |
| gene products, vpu | Non-glycosylated, membrane-associated, 16 kD proteins which are expressed in large amounts in cells infected with HIV-1. The proteins are required for efficient virion maturation and release. They are not present in HIV-2 nor in siv. Vpu is short for viral protein u, with u undefined. (12 Dec 1998) |
| gene rearrangement | A structural alteration of a chromosome that causes a change in the orderof its loci. (09 Oct 1997) |
| gene rearrangement, beta-chain T-cell antigen receptor | Ordered rearrangement of T-cell variable gene regions coding for the beta-chain of antigen receptors. (12 Dec 1998) |
| gene rearrangement, b-lymphocyte | Ordered rearrangement of b-lymphocyte variable gene regions coding for the immunoglobulin chains, thereby contributing to antibody diversity. It occurs during the differentiation of the immature b-lymphocyte. (12 Dec 1998) |
| gene rearrangement, b-lymphocyte, heavy chain | Ordered rearrangement of b-lymphocyte variable gene regions thereby contributing to antibody diversity. It occurs during the first stage of differentiation of the immature b-lymphocyte. (12 Dec 1998) |
| gene rearrangement, b-lymphocyte, light chain | Ordered rearrangement of b-lymphocyte variable gene regions coding for the kappa or lambda light chains, thereby contributing to antibody diversity. It occurs during the second stage of differentiation of the immature b-lymphocyte. (12 Dec 1998) |
| gene rearrangement, delta-chain T-cell antigen receptor | Ordered rearrangement of T-cell variable gene regions coding for the delta-chain of antigen receptors. (12 Dec 1998) |
| gene rearrangement, gamma-chain T-cell antigen receptor | Ordered rearrangement of T-cell variable gene regions coding for the gamma-chain of antigen receptors. (12 Dec 1998) |
| gene rearrangement, t-lymphocyte | Ordered rearrangement of T-cell variable gene regions coding for the antigen receptors. (12 Dec 1998) |
| gene redundancy | A situation in which many copies of the same gene exist in a genome. (09 Oct 1997) |
| gene regulation | The DNA and protein interactions in a gene that determine the temporal and spatial modes of expression as well as the amplitude of expression. (14 Nov 1997) |
| gene regulatory protein | <molecular biology> Any protein that interacts with DNA sequences of a gene and controls its transcription. (18 Nov 1997) |