| bacterial capsules | An envelope of loose gel surrounding a bacterial cell which is associated with the virulence of pathogenic bacteria. Some capsules have a well-defined border, whereas others form a slime layer that trails off into the medium. most capsules consist of relatively simple polysaccharides but there are some bacteria whose capsules are made of polypeptides. (12 Dec 1998) |
|---|---|
| brood capsules | Small hollow projections from the lining membrane of a hydatid cyst from which the scoleces arise. (05 Mar 2000) |
| capsules | Hard or soft, soluble containers of a suitable substance, for enclosing a dose of medicine, usually for oral administration. (12 Dec 1998) |
| antibiotics, tetracycline | <chemical> Broad-spectrum natural and semisynthetic antibiotics with a naphthacene structure obtained from various streptomyces species. Pharmacological action: protein synthesis inhibitor. (12 Dec 1998) |
| tetracycline | <drug> Broad spectrum antibiotic that blocks binding of aminoacyl tRNA to the ribosomes of both gram-positive and gram-negative organisms (and those of organelles). Produced by Streptomyces aureofasciens. Other exaples include tetracycline, demeclocycline and doxycycline. (09 Oct 1997) |
| tetracycline 5a(11a)dehydrogenase | <enzyme> Catalyses the oxidation of 7-chloro-5a(11a)-dehydrotetracycline to 7-chlorotetracycline; uses nadp Registry number: EC 1.3.1.- (26 Jun 1999) |
| tetracycline resistance | Nonsusceptibility of a microbe (usually a bacterium) to the action of tetracycline, which binds to the 30s ribosomal subunit and prevents the normal binding of aminoacyl-trna. (12 Dec 1998) |