The great debate over the meaning and relevance of population regulation lingers on under the perceived difference between limitation and regulation of animal numbers / what Murray (1999) calls the ‘‘population limitation hypothesis’’ versus the ‘‘density dependent regulation hypothesis’’. Berryman et al. (2002) attempt to solve this dilemma by (1) arguing that the problem is partly caused by a...

The paper presents a study of various enzymes involved in the final accumulation of glycogen in tumor tissues. The solid tumors used are : Novikoff hepatoma, Walker 256 carcinosarcoma, Sarcoma 37, leukemia, and melanoma. It was observed that tumor tissues showed lower activity of phosphoglucomutase and glycogen synthetase as compared with that of normal liver and muscle. All tumors studied exce...