Comparison of the localization of several muscle proteins in relaxed and contracted myofibrils.

The localization of several muscle proteins in relaxed and contracted myofibrils is compared. The morphology of the myofibrils and the behavior of these proteins was also investigated under extraction conditions.     

Modification of clonazepam anticonvulsive activity by its association with other anti-epileptic drugs

Summary The modification of the anti-epileptic activity of clonazepam by other anticonvulsivants is studied. The results vary according to the drug and technique used. The usefulness of the 2 techniques employed is discussed.     

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.     

Delay of normal development of sea urchin embryos by cytosine arabinoside

Résumé Le développement des ufs d'oursins est ralenti par la cytosine arabinoside à laquelle on les expose pendant 4 à 8 h, mais il reprend son cours après le traitement.

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This research was performed at the Naples Zoological Station in August of 1965 and was supported by an American Table award from the American Institute of Biological Sciences. I wish to thank Dr.A. Orengo for his kind assistance during my stay at the Station and to the director,P. Dohrn, for his hospitality.     

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.     

Demonstration of different metabolic pathways starting with glucose or fructose in Rhizobium meliloti]

Rhizobium meliloti can produce many polysaccharides on D-fructose and D-mannitol. In glucose-grown cultures, few polysaccharides are observed and 2 keto-gluconate is accumulated.