Toxicity of puffer fish - two species ( Lagocephalus laevigatus, linaeus 1766 and Sphoeroides spengleri, Bloch 1785) from the Southeastern Brazilian coast - Oliveira, Joacir Stolarz de; Pires Junior, Orlando R.; Morales, R. A. V.; Bloch Junior, Carlos; Schwartz, Carlos Alberto; Freitas, José Carlos de (Journal of Venomous Animals and Toxins, 2003)