Search PubMed⌕ Search

Biomedical subjects

H MARKOWITZ

Publications and source records attributed to H MARKOWITZ.

17 recordsLinked to original sources

Infant handling: effects on avoidance learning, brain weight, and cholinesterase activity.

Infant rats were "handled" by removing them periodically from their home cages. "Non-handled" rats were left undisturbed. Half of the animals were killed at weaning, and weights and cholinesterase activity were determined on four different sections of the brain. The remaining animals were conditioned to avoid an administered shock. Handling increased ventral-cortex and subcortical weights and decreased subcortical cholinesterase. No differences in avoidance conditioning were observed.

Animals↗

Absence of a prosthetic group in a type-specific polysaccharide of pneumococcus.

The specific polysaccharide of Type III pneumococcus, with only 0.05 per cent of N and 0.01 per cent of P, still shows almost maximal precipitation of a Type III antipneumococcus rabbit serum and the expected antigenicity in man. There is therefore no evidence that a prosthetic group is involved in these characteristic activities.

Animals↗