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Intrauterine and lactogenic transfer of Toxocara canis larvae in paratenic hosts


, : Intrauterine and lactogenic transfer of Toxocara canis larvae in paratenic hosts. Helminthologia (Bratislava) 30(3-4): 111-113

We studied the intrauterine and lactogenic transfer of Toxocara canis larvae in mice from mothers to their progeny. The intrauterine transfer was sporadical and larvae were retained in the uterus, amnia and amniotic fluid. Of 1000 infective eggs, 246 larvae on the average were established in mothers of the parent nests and 47 larvae, on the average were transformed by lactation to the progeny of the first filial generation. Larvae were transferred to the second and subsequent filial generation in low numbers and toxocaral antibodies were passed intensively on from mothers to offspring. Larvae transferred by lactation appear to have lost their antigenicity as level of antibodies generated by the infected offspring was very low.

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