[Change in the adenylate cyclase activity of the lymphocytes and thrombocytes in irradiated sheep].

Changes in basal and prostaglandin stimulated activity of adenylate cyclase in lymphocytes and platelets of irradiated sheep are phasic. In platelets adenylate cyclase activity is maximum on days 5 and 10 following irradiation, whereas in lymphocytes the enzyme activity is maximum on day 7. cAMP phosphodiesterase activity is slightly changed in platelets and increased in lymphocytes of exposed sheep.