male pinworm is about 2–5 mm in length and no more than 0.2 mm wide. The male worms are haploid
females are diploid and reach a length of 8–13 mm and a width of up to 0.5 mm. The female worms are light yellowish white and have a thin, long, sharply pointed tail
eggs are:
50–60 micrometers by 20–32 micrometers
have a smooth, clear outer capsule
eggs are are flattened on one side
are destroyed by ultraviolet lamps, dry heat and sunlight. The eggs are resistant to various 'cleaning mechanisms' including chlorination in swimming pools, hydrocyanic gas, paradichlorobenzene, and naphthalene
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