[The distribution of leptospirae in the icterohaemorrhagiae serogroup].

The capacity of leptospiras to get acclimated in the organism of unusual hosts has been studied. Cultures of Icterohaemorrhagiae from musquashes, house mice and field voles have been isolated of leptospirosis sources under intensive epizootics among rats. A possibility to reproduce Leptospira carrying by the cultures of leptospirae of serogroup icterohaemorrhagiae in musquashes and water voles has been shown.

[Various methods to assay carbenicillin activity against Pseudomonas aeruginosa].

It was shown that the cultures of Pseudomonas aeruginosa were sensitive to 75-100 micrograms/ml and resistant to 25-50 micrograms/ml of carbenicillin when tested by the method of serial dilutions in the synthetic medium developed by the authors and in Jorgensen's medium. The cultures were incubated for 4 and 16 hours, respectively. The data did not confirm the resistance of the cultures to 25-75 and 100 micrograms/ml carbenicillin when it was determined with the serial dilution method in Pal's medium and the disk diffusion method, respectively.

[A method for determining the sensitivity of the causative agents of suppurative infection to iodopiron].

Bacterial suspensions of cultures (10(7) PFU) of pathogenic Staphylococcus, vulgar Proteus and pyocyanic bacterium are resistant to 2.9-46.87 mg per disc of iodopyron in 100% of cases.

[Amylase in the mixed saliva of diabetics and nondiabetics on an empty stomach and during the glucose tolerance test].

The catalytic activity of alpha-amylase is significantly elevated in salivary pool from 146 diabetics (2176 +/- 149.3 mu catal.l-1) vs.