There may be bacteria, but the venom is known to contain sphingomyelinase D which is an enzyme that causes cell death. That is what causes necrosis. https://en

There may be bacteria, but the venom is known to contain sphingomyelinase D which is an enzyme that causes cell death. That is what causes necrosis. https://en.m.wikipedia.org/wiki/Loxoscelism https://en.m.wikipedia.org/wiki/Loxoscelism