Metabolites ofStreptomyces noursei

Было установлено, что актиномицет Str. noursei образует амиды некоторых разветвленных алифатических кислот: изобутирамид, метилэтилацетамид, изовалерамид, а, вероятно, и более сложные гомологи, как изокапронамид, изоэнантамид и 4-метилкапронамид. Обсуждается биогенез этих веществ.     

DETERMINING DRUG SENSITIVITY—Use of the Gel Diffusion Method

A study was carried out to determine whether the double diffusion gel test when applied to the serum of patients with clear-cut penicillin reactions of various types, might be useful for demonstrating the presence of precipitating antibody. Results did not demonstrate the antibody.The difference in results with this test obtained by various workers was not explained by the observations in this study.Other approaches to determination of the mechanism of the penicillin reaction are discussed, and it is noted that the hemagglutination test, newly applied to the penicillin reaction problem, may be useful after further investigation.     

On the formation of adipocere from fats

Summary The formation of adipocere is a process occurring under virtually anaerobic conditions in which human fat is converted into a complex of saturated fatty acids by a great variety of bacterial species occurring in and on the decomposing body.     

SOME FEATURES OF A REMARKABLE ORGANELLE IN BACILLUS SUBTILIS

In thin sections of Bacillus subtilis certain organelles are observed situated either in the nuclear area from where they can extend into the cytoplasm, or in contact with the cell wall. Inside the nuclear area, the organelle is sometimes composed of concentric layers each seen to consist of two dense borders with a lighter interspace. In other instances, inside as well as outside the nuclear area, the organelles appear as clusters of delicately delimited vesicles. A typical site of occurrence is on the inner rim of the centripetally developing transverse septa, where it appears as a so called peripheral body (2). The micrographs strongly suggest that when the organelles are attached to the walls they have a function in cell wall formation.