Venom organ failure. Many caterpillars have defensive venom glands associated with specialized bristles on the body, known as urticating hairs, which can be lethal to humans (e.g., that of the "Lonomia" moth), although the venom's strength varies depending on the species. Bees synthesize and employ an acidic venom (apitoxin) to cause pain in those that they sting to defend their hives and food stores, whereas wasps use a chemically different alkaline venom designed to paralyze prey, so it can be stored alive in the food chambers of their young. The use of venom is much more widespread than just these examples.
Alternative versions of Venom a battle the suit eventually separated itself from Eddie and forcibly bonded itself with Peter, turning him into Venom. The Ultimates arrived and were able to separate Peter from the suit. Eddie later approached Peter and demanded that he retrieve the suit for him but was rebuffed. During a confrontation between Peter, Eddie and Gwen Stacy, Gwen transformed into Carnage. Contact with Carnage caused trace amounts of the suit within Eddie's body to multiply, transforming him into Venom, at which point the two symbiotes began to fight. After a brief battle the Venom symbiote absorbed all traces of the Carnage