1921
Volume 13, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645
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Abstract

Summary

A miracidia-immobilizing substance has been demonstrated in tissue extracts of the snail subsequent to infection with . Detection of the immobilizing substance in snail extracts occurred as early as 9 days postinfection. The immobilizing activity of the extracts was not diminished by brief periods of freezing, storage at 5°C, or heating to 56°C for 30 minutes. Absorption of up to 67% of the immobilizing activity of the extracts could be accomplished by exposure to either living or formalin-fixed cercariae. With two exceptions, extracts prepared from other species of snails refractory to infection gave no evidence that immobilizing substances were present.

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/content/journals/10.4269/ajtmh.1964.13.36
1964-01-01
2019-08-20
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