Institute of Cytology;
Russian Academy of Sciences;
Tikhoretsky;
Ave.;
4;
St Petersburg 194064;
Russia;
Department of Physiology;
University of Texas Health Science Center at San Antonio;
7756-7703 Floyd Curl Drive San Antonio;
TX 78229.USA;
Institute of Cytology;
Russian Academv of Sciences;
Tikhoretsky;
Ave.;
4;
St Petersburg 194064;
Russia;