[Nucleotide sequence of internal transcribed spacers and 5.8S rDNA for the ribosomal operon from alfalfa Medicago sativa and cotton Gossypium hirsutum L].

The 708- and 769-bp fragments from alfalfa and cotton containing the 3'-end of the 18S gene, the internal transcribed spacer. 1 (ITS1) the 5.8S gene, ITS2, and the 5'-end of the 28S gene were obtained using primers to the 18S and 28S ends of rDNA from tomato by a polymerase chain reaction.

[Mobilization of phase I plasmid in Shigella sonnei and stability of its inheritance in rough strains of Shigella and Escherichia].

The plasmid pSS120, determining the synthesis of species specific I phase antigen of Shigella sonnei is mobilized for genetic transfer into E. coli K12 recipient cells with the frequency 12-41%. The frequency depends on the type of mobilized plasmid and recipient strain.