Research Institute for Plague Control, Rostov-on-Don, Russia
The adhesive, hemolytic and triacylglycerol lipase activity of 4 V.cholerae ctp+ ctx- cultures, sensitive to bacteriophage ctx+, isolated from the Don and sewage water were tested. All these cultures were found to induce hemolysis of sheep red blood cells in the Greig test in 2 hours, possessed triacylglycerol lipase activity, but had no adhesive properties. By these parameters — atoxigenicity and the absence of adhesive properties — the isolated V.cholerae strains were characterized as avirulent and epidemically safe.
Zh. Mikrobiol. (Moscow), 2004, No. 6, P. 3—6