Muscle damage during the early phase of infection
Larva enters muscle, muscle proteins "leak" into bloodstream (e.g. CPK, myoglobulin)
Schematic of Larva Invading a Muscle Cell
Newborn Larvae (low mag)
Newborn Larva (Nomarski, high mag)
Worm entering muscle cell
Electron micrograph of larva 1 hr after entering muscle cell