| Rs virus | <virology> This RNA virus is a member of the Paramyxoviridae family and is a major pathogen in the upper and lower respiratory tract in both infants and younger children. Respiratory syncytial virus manifestations include bronchiolitis, pneumonia and croup. Acronym: RSV (27 Sep 1997) |
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| RSA | <abbreviation> Right sacroanterior position. (05 Mar 2000) |
| RSD | <abbreviation> Reflex sympathetic dystrophy. (05 Mar 2000) |
| RSP | <abbreviation> Right sacroposterior position. (05 Mar 2000) |
| Rsr1p(Bud1p) GTPase | <enzyme> A GTPase of the ras family required for budding in yeast Registry number: EC 3.6.1.- Synonym: rsr1 gene product (26 Jun 1999) |
| RST | <abbreviation> Right sacrotransverse position. (05 Mar 2000) |
| RST segment | The part of the electrocardiogram between the QRS complex and the T wave. Virtually never distinct in normal hearts in which it forms the initial limb of the T wave without an agreed endpoint. (05 Mar 2000) |
| RSV | <virology> This RNA virus is a member of the Paramyxoviridae family and is a major pathogen in the upper and lower respiratory tract in both infants and younger children. Respiratory syncytial virus manifestations include bronchiolitis, pneumonia and croup. Acronym: RSV (27 Sep 1997) |
| RSV test | <investigation> A blood test which measures the levels of immunoglobulins IgG and IgM against respiratory syncytial virus (RSV). (17 Dec 1997) |