| fourth parallel pelvic plane | The lower opening of the true pelvis, bounded anteriorly by the pubic arch, laterally by the rami of the ischium and the sacrotuberous ligament on either side, and posteriorly by these ligaments and the tip of the coccyx. Synonym: apertura pelvis inferior, apertura pelvis minoris, fourth parallel pelvic plane, pelvic outlet, pelvic plane of outlet, plane of outlet. (05 Mar 2000) |
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| acinetobacter infections | Infections with bacteria of the genus acinetobacter. (12 Dec 1998) |
| actinobacillus infections | Infections with bacteria of the genus actinobacillus. (12 Dec 1998) |
| actinomycetales infections | Infections with bacteria of the order actinomycetales. (12 Dec 1998) |
| adenophorea infections | Infections with nematodes of the subclass adenophorea. (12 Dec 1998) |
| adenovirus infections, human | Respiratory and conjunctival infections caused by 33 identified serotypes of human adenoviruses. (12 Dec 1998) |
| aids-related opportunistic infections | Opportunistic infections found in patients who test positive for human immunodeficiency virus (HIV). The most common include pneumocystis carinii pneumonia, kaposi's sarcoma, cryptosporidiosis, herpes simplex, toxoplasmosis, cryptococcosis, and infections with mycobacterium avium complex, microsporidium, and cytomegalovirus. (12 Dec 1998) |
| alphavirus infections | Virus diseases caused by members of the alphavirus genus of the family togaviridae. (12 Dec 1998) |
| anaplasmataceae infections | Infections with bacteria of the family anaplasmataceae. (12 Dec 1998) |
| arbovirus infections | Infections caused by arthropod-borne viruses, general or unspecified. (12 Dec 1998) |
| arenaviridae infections | Virus diseases caused by the arenaviridae. (12 Dec 1998) |
| arterivirus infections | Infections caused by viruses of the genus arterivirus. (12 Dec 1998) |
| ascaridida infections | Infections with nematodes of the order ascaridida. (12 Dec 1998) |
| astroviridae infections | Infections with astrovirus, causing gastroenteritis in human infants, calves, lambs, and piglets. (12 Dec 1998) |
| bacillaceae infections | Infections with bacteria of the family bacillaceae. (12 Dec 1998) |