[Congenital cysts and fistulas on the neck].

This paper presents the currently available data on congenital lateral cysts and fistulas of the neck based on the authors' original experience and the review of the relevant literature. The modern methods for diagnostics and the surgical treatment of these conditions are described and the causes underling the development of their relapses are analyzed. Recommendations for the prevention of congenital cysts and fistulas on the neck are proposed.

[Ultrastructure of Clostridium septicum].

The study of Cl. septicum by means of electron microscopy revealed that these organisms had peritrichously located flagella and the five-layer cell wall. The formation of small oval spores was observed by the end of the first day.

[Electron microscopic study of several features of spore formation in type B Clostridium perfringens].

The authors carried out electron microscopy of the thin sections of Cl. perfringens, type B (strain No. 89).

[Characteristics of spore formation in Clostridium botulinum type C].

Electron microscope study of C1. botulinum, tyep C, showed that microbial cells were surrounded with a five-layer wall. Structures characteristic of sporulating cells and phage particles whose intracellular development led to reduction and lysis of the cytoplasm were revelaed in the area of the cytoplasm.