[An evaluation of the biochemical typing of Klebsiella cultures].

The paper deals with the results of analysis of 219 strains of Klebsiella using 12 tests--fermentation of adonite, asparaginic acid, sodium citrate, dulcite, d-tartrate, glutamic acid, inosite, L-proline, sodium malonate; reactions with methyl red, Foges-Proscauer, with 5-ASA. A scheme for determining fermentovars of Klebsiella is suggested which includes the tests--fermentation of adonite, dulcite, d-tartrate, glutamic acid; color reaction with 5-ASA. The groups of Klebsiella different in origin are characterized by nonhomogeneous distribution of different fermentovars.

[The bacteriocin typing of Klebsiella pneumoniae strains].

Results of bacteriocin typing of 196 strains of the Klebsiella genus are presented. They are typified by their sensitivity to bacteriocins and by their production using colicinogenic and indicating strains from collection of P. Fredericq [correction of Frederick], D.

[Bacteriocinogeny in Klebsiella and the applied use of klebocins].

A phenomenon of bacteriocinogeny is studied in 83 K-type strains of Klebsiella. Physicochemical (permeability through cellophane, thermo-resistance, diffusion rate in agar, inactivation by trypsin, induction by UV irradiation) and biological (activity spectrum, specificity) properties are studied. Eight preparations of klebocins are examined by electron microscopy.

[A rapid method of bacteriocin typing of microorganisms].

The technique of making paper disks with Klebsiella bacteriocins is described, as is the method for improving the stability of bacteriocin preparations. The authors have developed a method for bacterial bacteriocin typing, facilitating the work and taking but 4-5 hrs. The results of klebocin typing of Klebsiella-237 strains with the use of the developed technique are presented.

[An evaluation of methods of determining the hemolytic activity of Klebsiella in solid nutrient media].

Hemolytic activities of Klebsiella-237 strains of various origins were measured in solid nutrient media by three methods making use of six different agar bases for the preparation of blood nutrient media. The authors analyze the agar bases, discuss the advantages and shortcomings of all the methods used with consideration for the purpose of the investigation. The findings evidence a higher hemolytic activity in Klebsiella isolated from patients as against the hemolytic activities of reference strains.