1921
Volume 15, Issue 3
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645
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Abstract

Summary

Attempts to utilize the rat cecal scoring technique of Neal to measure the invasiveness of strains of gave inconsistent results when Sherman strain rats were used. Results with Wistar rats were more consistent.

Two strains of , one in culture for 11 years and another in culture for 4 years, were still as highly infective and invasive as were four strains recently isolated from cases of symptomatic amebiasis.

Strain F22 originally isolated from an amebic abscess of the brain showed diminished infectivity and invasiveness. Its infectivity and invasiveness were restored to a level comparable to recently isolated strains when organisms were passed rapidly through rats and culture.

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/content/journals/10.4269/ajtmh.1966.15.294
1966-05-01
2017-09-23
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