The migration and distribution of duodenale hookworm in the tissues of cricetulus
Yin Qingyuan Department of Parasitology, Henan medical College
30 hamsters (18 females, 12 males) over 6 months were infected bythe 5.5～to 22 days infective hookworm larvae. Each hamster was inocula-ted with 400 infective larvae in the area of the right inguinalis subcutaneus.The hamsters were killed and examined 24 hours to 134 days after infection. The results are as follows: 1. The infective larvae migrated to the lungs 24 hours after infection.A large number of larvae were noticed in the lungs within 1～9 days. After-wards, the larvae in the lung decreased gradually. However, the larvaewere still seen 60 days later.Larvae started to migrate to the small intes-tines 7 days after infection. Larvae could be detected at the inoculatedside, especially in the inoculated area, 1 to 134 days after infection. 2. 30 hamsters were inoculated. In 14 hamsters(47%), the infectivelarvae migrated to the opposite side which was not inoculated. 252 larvaewere detected in 14 hamsters, 229 larvae (90.9%) at the inoculated side,and 23 larvae (9.1%) at the opposite. In other 16 hamsters, 175larvae were detected at the inoculated side, but no larvae were detected atthe opposite side.