| HI | half-scan with interpolation; head injury; health insurance; hearing impaired; heart infusion; hemag... |
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| IID | insulin-independent diabetes |
| IIDM | insulin-independent diabetes mellitus |
| ILV | independent lung ventilation |
| IME | independent medical examination; indirect medical education |
| independent variable | A characteristic being measured or observed that is hypothesised to influence another event or manifestation (the dependent variable) within a defined area of relationships under study; that is, the independent variable is not influenced by the event or manifestation, but may cause it or contribute to its variation. See: dependent variable. (05 Mar 2000) |
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| thymus-independent antigen | An antigen that does not require T helper cell activation in order for the host's B-cells to be stimulated. Repeating polymers such as polysaccharides are examples of T-independent antigens. (05 Mar 2000) |
| law of independent assortment | Different hereditary factors assort independently when the gametes are formed; traits at linked loci are an exception. Synonym: Mendel's second law. (05 Mar 2000) |