The rotavirus nonstructural protein NSP4 was the first viral enterotoxin discovered. It induces diarrhea and causes Ca2+-dependent transepithelial secretion.
References
NSP4 (rotavirus) Wikipedia(Text) CC BY-SA
The rotavirus nonstructural protein NSP4 was the first viral enterotoxin discovered. It induces diarrhea and causes Ca2+-dependent transepithelial secretion.