Search PubMed⌕ Search

Biomedical subjects

M Davidson

Publications and source records attributed to M Davidson.

At least 379 records · Page 21Linked to original sources
PubMed1977

Seasonal variations in post-partum plasma progesterone levels and conception in primiparous and multiparous dairy cows.

Progesterone concentrations in peripheral plasma of 18 primiparous and 34 multiparous dairy cows were determined by radioimmunoassay every 4 days, from 10 days post partum until the next conception. The interval from parturition to the first progesterone peak (greater than 4 ng/ml plasma) was significantly longer (P less than 4 ng/ml plasma) was significantly longer (P less than 0.01) in primiparous than in multiparous cows. The progesterone concentrations on Days 4-15 of the oestrous cycle were significantly lower (P less than 0.025) during the summer than in cycles occurring in winter. The conception rate during the summer was lower than in winter. In cows inseminated in summer, conception was related to the shape of the progesterone curve in the cycle preceding insemination.

Animals↗
PubMed1977

Primary acquired hypogammaglobulinemia and regional enteritis.

We had a patient with primary acquired hypogammaglobulinemia (PAH), nodular lymphoid hyperplasia, giardiasis, and the subsequent development of regional enteritis (RE). The case is of interest because the development of regional enteritis in a patient with PAH has not been previously reported, to our knowledge. The interaction of hypogammaglobulinemia and RE is discussed from an immunologic point of view. The report adds RE to the many known bowel diseases associated with PAH.

Adult↗
PubMed1976

GI problems in children: II.

Accurate differentiation of such disorders as intrahepatic and extrahepatic cholestasis and the two types of megacolon must precede attempts at treatment. Gastroesophageal reflux, viral hepatitis, and Reye's syndrome are also discussed.

Bile Ducts↗