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.
Anti-Venom (symbiote) event, overusing his healing powers can cause Anti-Venom's powers to weaken. The Anti-Venom symbiote's animated debut is seen on "Ultimate Spider-Man vs the Sinister Six", voiced by Matt Lanter. This version is created by Doctor Octopus and Michael Morbius from a sample of the Venom symbiote, and Harry Osborn is its host. In its self-titled episode "Anti-Venom", this symbiote is created as a candidate for Doc Ock's Sinister Six. Anti-Venom nearly kills Agent Venom only to be stopped by an ion inhibitor used by Spider-Man and Iron Patriot which leaves Anti-Venom unconscious, and its host in a coma. Anti-Venom returns