Cremaschi G A, Genaro A M, Sales M E, Sterin-Borda L
Experientia. 1983 Sep 15;39(9):1026-8. doi: 10.1007/BF01989785.
The effects of alloimmune sera on the contractile tension and frequency of spontaneously beating isolated mouse atria were explored. Immune sera enhanced frequency as well as tension; both effects were blocked by the presence of propranolol. In contrast, pretreatment with 6-OH dopamine potentiated the stimulatory action of immune sera.