@article{article7e12153c, title = {Action of parotoid venom on the heart of the toad (bufo ictericus ictericus) spix, 1824 and its effects on the inhibition caused by vagal stimulation}, author = {Pasquarelli, P and Mendes, E and Sawaya, Paulo}, year = {1987}, journal = {Comparative Biochemistry and Physiology} }