| LLOs | Legionella-Like Organisms |
|---|
| D | Diversity |
|---|---|
| V[D]J | Variable/diversity/joining |
| DH | diversity |
| CLO | Campylobacter-Like Organisms |
| GMOs | Genetically Modified Organisms |
| pleuropneumonia-like organisms | The original name given to a group of bacteria which did not possess cell walls; these organism's, isolated from man and other animals, soil, and sewage, are now assigned to the order Mycoplasmatales. (05 Mar 2000) |
|---|---|
| specific pathogen-free organisms | Animals or humans raised in the absence of a particular disease-causing virus or other microorganism. Less frequently plants are cultivated pathogen-free. (12 Dec 1998) |
| sputum for acid-fast organisms | A special microscopic slide that is prepared to detect the presence of acid-fast bacilli. The diagnosis of tuberculosis can be made using this test. If the sputum specimen shows the acid fast organism a sputum culture (for Mycobacterium) is then performed. (27 Sep 1997) |
| indicator organisms | Organisms that respond predictably to various environmental changes, and whose presence, or abundance, are used as indicators of environmental conditions. (09 Oct 1997) |
| antibody diversity | The phenomenon of immense variability characteristic of antibodies, which enables the immune system to react specifically against the essentially unlimited kinds of antigens it encounters. Antibody diversity is accounted for by three main theories: 1) the germ line theory, which holds that each antibody-producing cell has genes coding for all possible antibody specificities, but expresses only the one stimulated by antigen; 2) the somatic mutation theory, which holds that antibody-producing cells contain only a few genes, which produce antibody diversity by mutation; and 3) the gene rearrangement theory, which holds that antibody diversity is generated by the rearrangement of variable region gene segments during the differentiation of the antibody-producing cells. (12 Dec 1998) |
| genetic diversity | <genetics> A property of a community of organisms of a certain species, in which members of the community have variations in their chromosomes due to a large number of slightly dissimilar ancestors, this property makes the community in general more resistant to diseases or to changing ecological conditions. (09 Oct 1997) |
| cultural diversity | Coexistence of numerous distinct ethnic, racial, religious, or cultural groups within one social unit, organization, or population. (12 Dec 1998) |
| diversity | <ecology> The number and variety of species present in an area and their spatial distribution. (09 Oct 1997) |
| diversity index | <ecology> The relationship of the number of taxa (richness) to the number of individuals per taxon (abundance) for a given community. (09 Oct 1997) |
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