[The use of the gene hybridization method for the identification of epidemiologically dangerous strains of cholera vibrios]. / Primenenie metoda gennogo zondirovaniia dlia vyiavleniia épidemicheski opasnykh shtammov kholernykh vibrionov.

ABSTRACT

Using the labeled DNA fragments containing the genes for cholera toxin the strains of cholera vibrios were studied for the presence of cholera toxin genes. Vibrio cholerae strains isolated from natural water reservoirs under the favourable epidemic situation do not contain the cholera toxin genes. The DNA hybridization method was compared with other methods used in research and practical work for estimation of epidemic importance of cholera vibrios.