Figure 4From: The mode of action of dimeticone 4% lotion against head lice, Pediculus capitisTreated abdominal spiracle occluded by a silicone plug. SEM of a treated spiracle in which the whole of the aperture is blocked by a silicone deposit. X-ray analysis showed that elemental silicon was present on the surrounding cuticle of the body, the peritreme of the spiracle, and the occluding plug across the spiracle opening.Back to article page