Use of the swarming phenomenon for the purpose of isolating pure cultures of salmonellae from feces. I

The authors elaborated and tested a number of elective-differential media for swarming of salmonellae. When pure cultures of Proteus, E. coli and salmonellae were seded on these media the latter exeeded the rest of enteric bacteria by the intensity of swarming. In the capacity of saprophyte inhibitors the most effective were media with the addition of penicillin and sodium selenite. Satisfactory results were obtained on the mentioned media in isolation of salmonellae from the artificially contaminated feces by the method of swarming     

The role of catecholamines, acetylcholine and cholinesterase activity in the development of the cataleptic action of triftazin following repeated administration

Catalepsy occurring in rats in a singular and repeated introduction of triftasine has a manifold mechanism, the main components of which are related to the metabolism of dophamine, acetylcholine and cholinesterase activity. A change in the intensity of catalepsy in a multiple introduction of the preparation is due mainly to cholinergic influences.     

Motion picture study of the temporal and geometric parameters of ethanol fixation of an isolated neuron

The work has employed a combination of microscopic observation, filming and computer processing of the data obtained. The proper time, rate and latent period of fixation with ethanol of different concentration were analyzed in the isolated surviving neuron. The temporal parameters of fixation were shown to depend on the size of the neuron and the concentration of the fixator. The authors describe the regularities and distinctions in changes of large and small diameters as well as the volumes in vegetative neurons of different size in frog. An attempt has been made to consider the fixation not only as a momentary action but also as a prolonged-in-time complex morphological process.     

Stereotaxic surgery in the hyperkinetic form of infantile cerebral palsy

The results of 67 stereotaxic operations performed in 60 patients for the hyperkinetic form of infantile cerebral paralysis are presented. The efficacy of dentatotomy is compared with that of thalamotomy. Thalamotomy is most effective in patients with hemiatetosis and choreoatetoid hyperkinesis. Dentatotomy resulted not only in a reduction of hyperkinesis, but also in a considerable alleviation of muscle spasticity. The destruction of the lateral part of nuclels dentatus caused predominantly a reduction of the muscle tone and of involuntary movements of the lower extremities, and--to a lesser degree--of the upper as well. The destruction of the medial part of the nucleus dentatus resulted in a clear reduction of muscle dystony in the trunk.