Abstract
The histochemistry of oxidoreductases and hydrolases has been studied in the goat corpus luteum during late pregnancy. Activities of glucose-6-phosphate and isocitrate dehydrogenases were very strong and activities of lactate, succinate and malate dehydrogenases were moderate. Activity of alkaline phosphatase was observed to be strong, while those of acid phosphatase and adenosine triphosphatase were weak. These findings suggest that the goat corpus luteum during late pregnancy is active in steroid synthesis and general metabolism. The present observations are compatible with the importance of the corpus luteum for maintenance of pregnancy in the goat.