| astrovirus | A genus of small, circular RNA viruses in the family astroviridae. They cause gastroenteritis and are found in the stools of several vertebrates including humans. Transmission is by the faecal-oral route. There are at least seven human serotypes and the type species is human astrovirus 1. (12 Dec 1998) |
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| astroviruses | <virology> Spherical viruses with 5 or 6 pointed star shaped surface pattern. May be associated with enteritis in various vertebrates. (18 Nov 1997) |
| Astrup, Poul | <person> Danish clinical chemist, *1915. See: micro-Astrup method. (05 Mar 2000) |
| Astwood's test | A test for the assay of oestrogenic substances; immature female rats (25 to 49 g) are injected subcutaneously with the hormone and killed after 6 hours, when the increase in uterine weight (due largely to imbibation of water) is taken as the criterion of oestrogenic activity. Synonym: Astwood's test. (05 Mar 2000) |
| Astwood, Edwin | <person> U.S. Endocrinologist, 1909-1976. See: Astwood's test. (05 Mar 2000) |
| astyllen | <chemical> A small dam to prevent free passage of water in an adit or level. Source: Websters Dictionary (01 Mar 1998) |
| astz | An abbreviation that stands for antistreptozyme test. This haemagglutination blood test is a very sensitive of a recent streptococcal infection. (27 Sep 1997) |