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SUMMARY Chicken anemia agent (CAA) produced anemia in chicks of 4 strains obtained from specific-pathogen-free (SPF) flocks, but not in chicks from one SPF flock, or chicks of 6 conventional strains maintained to produce commercial chicks. The difference in susceptibility of chicks to CAA was closely related to maternal antibody against CAA.
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Yuasa et al. (1980) studied this question.
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