[Use of an immunoperoxidase method in situ for detecting recombinant clones of vaccinia virus containing an expressed gene of influenza viral hemagglutinins].

The vaccine L-IVP strain of vaccinia virus (VV) was used to construct the recombinant viral clones containing the influenza A hemagglutinin gene. The recombinant T plasmid was obtained with HA gene inserted in the vector pGS-20 (B. Moss) under the 7.

[Detection of the provirus of the bovine leukemia virus in bovine peripheral blood leukocytes by means of DNA hybridization].

The method allowing the detection of BLV proviral DNA in the peripheral blood leukocytes of cattle is reported. Cell DNA from leukocytes used without preliminary cultivation was dot-hydridized with 32P-labeled plasmid that included a fragment of BLV proviral DNA. In parallel, sera from the cattle under study were tested by immunodiffusion assay (ID).