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WMHBV infections in spider monkeys and a chimpanzee. Two black-handed spider monkeys (A and B) and a chimpanzee (C) were inoculated with woolly monkey serum. The animals were monitored for HBsAg and antibodies to HBcAg by using diagnostic ELISAs from Abbott Laboratories and for WMHBV DNA by PCR. The anti-HBcAg assay is an inhibition assay in which lower OD492 values indicate positive responses.
