[Studies on the infection mode of hookworms. Experiments on communication of Necator americanus through oral membranes].
D000328:Adult; D005260:Female; D006725:Hookworm Infections / Q000209:etiology*; D006801:Humans; D007814:Larva; D008297:Male; D009061:Mouth Mucosa; D009331:Necator; D013997:Time Factors