[Influence of plasmaphoresis on total and T-lymphocyte count (author's transl)]

For more than one year 30 plasma donors were tested as to their influence on leukocytes, lymphocytes and SRBC-rosette-forming-T-lymphocytes. None of the donors, even under long-term observation and with more than 40 double plasmaphoreses per year, showed any significant changes in the above-mentioned data. The general level of lymphocytes and SRBC-rosette-forming is individually fixed, and there is a definite correlation between these two factors. This individual level is also uninfluenced by frequent plasmaphoreses.