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A tetrodotoxin-like substance found in the Brazilian frog Brachycephalus ephippium.
A tetrodotoxin-like substance, denoted ephippiotoxin, was obtained from the tissue of Brachycephalus ephippium, a small pumpkin-coloured frog collected in the Atlantic Forest of the southeast regionExpand
A study on melanophore receptors of Papiliochromis ramirezi (Teleostei, Cichlidae).
Melanophores of Papiliochromis ramirezi aggregate their melanosomes in the presence of catecholamines. Their order of potency are: at 10(-4) M, norepinephrine greater than isoproterenol =Expand