Effect of alcohol ingestion on the epithelial cell population in rat small intestine

Summary Chronic administration of alcohol to well-nourished rats led to striking changes in the small intestinal cell population. The present experiments corroborate the view that alcohol is directly toxic to the small intestine.The authors wish to thank Mr.P. R. Gaspar for the technical assistance.     

Development of oxidative metabolism in the non-innervated optic lobe of the chick.

Early removal of the optic cup of the chick embryo prevents innervation of the contralateral optic lobe. This reduces the rate of development od citrate synthetase. The posthatch increase of the level of this enzyme related to oxidative metabolism is not impaired by denervation of the chick optic lobe.     

Effect of chemical sympathectomy,adrenalectomy and adrenergicα- andβ-blocking agents on the development of hyperglycemia induced by streptozotocin in the rat

Summary The sympathetic nervous system in the rat does not play any significant role in the streptozotocin-induced and tolbutamipe-induced hypoglycemia.     

A wide spectrum of resistance to pyrethroid insecticides inMusca domestica

Summary Selection of a strain of house flies with the pyrethroid bioresmethrin has resulted in a wide range of cross resistance to 15 other pyrethroid insecticides.     

Phospholipid composition ofDipylidium caninum

Summary The phospholipid composition ofDipylidium caninum has been studied. Chloroform-methanol-soluble fraction amounted to 2.4% and phospholipids to 0.5% of the wet weight of the parasite. Phosphatidyl choline and phosphatidyl ethanolamine represented the bulk of the phospholipids, whereas phosphatidyl serine, phosphatidyl inositol, lysolecithin and lysophosphatidyl ethanolamine were present in minor amounts. Sulfatides were also identified in this parasite.