RESPIRATION OF GONOCOCCUS

Studies on Gonococcus Infection

The four colony types of several different strains of gonococci were isolated by selective transfers on agar. These colony variants differed in the degree of autoagglutination which occurred when they were grown in fluid medium. It was found that this clumping behavior was related to the colonial type, with type 2 isolates exhibiting the greatest autoagglutination followed by types 3, 1, and 4....

Surface structures of the gonococcus.

The capsule of the gonococcus

16 strains of Neisseria gonorrhoeae were subjected to several established techniques for capsule demonstration by light microscopy. In all strains examined, encapsulation of the gonococcus was demonstrated. Although the capsules were somewhat more easily seen in strains recently isolated from clinical material, organisms that had been passaged for several years also were encapsulated as were al...

The Carbohydrates of Gonococcus and Meningococcus

The alcohol-insoluble polysaccharides of gonococcus and meningococcus were found to contain 4.2 and 3.7 per cent nitrogen respectively, to be protein-free by chemical test, to reduce FehIing-Benedict solution only after hydrolysis. They were non-toxic for rabbits and mice, and failed to engender antibodies (precipitins) in rabbits. They produced no cutaneous reactions in normal, snuffle-free ra...

Biological Relationships of Diplococcus Intracellularis and Gonococcus

The most marked differences, exclusive of pathogenic effects in man, between gonococcus and Diplococcus intracellulans are cultural ones, and consist chiefly in abundance of growth and choice of medium. Relatively larger doses of gonococci than of diplococci are required to kill young guinea-pigs, but the lesions are very similar in the two cases, and both organisms lose pathogenic power rapidl...