Regulation of Na+-K+ pump activity in erythrocytes and blood pressure in anephric rats.

This study was designed to explore factors involved in the regulation of Na-K pumps in erythrocytes and blood pressure in anephric Sprague-Dawley female rats. Twenty-four hours following bilateral nephrectomy, the rats were given a 1-h infusion of 1 ml of either 0.9% or 5.

Autoanti-idiotypic lymphocytes in man.

Cells with anti-idiotypic properties were detected 4-6 months following immunization with tetanus toxoid (TT), and were undetectable 10 days following a booster injection. The presence of these cells concomitantly with the normal drop of anti-TT serum titers, and their specific binding to autologous IgG--F(ab')2 anti-TT, suggests a negative feedback at the idiotypic network level.