[Comparative morphological findings in examples of Trichostrongylus colubriformis isolated from human infestations and T. colubriformis obtained from experimental infection of Ovis aries with larva from human isolates].

The authors compare the length of the spicules of 100 Trichostrongylus colubriformis collected from man and as many specimens from Ovis aries experimentally infected with larvae obtained from cultures of human stools. The parasites from man have spicules shorter than those obtained in lambs.