Heat-labile enterotoxin family
In molecular biology, the heat-labile enterotoxin family includes Escherichia coli heat-labile enterotoxin (Elt or LT) and cholera toxin (Ctx) secreted by Vibrio cholerae. lt is so named because it is inactivated at high temperatures.
Source: Wikipedia — Heat-labile enterotoxin family (CC BY-SA 4.0)