| genetic variation between woodchuck populations with high and low prevalence rates of woodchuck hepatitis virus infection. | woodchuck hepatitis virus (whv) infection is known to be endemic in areas of the mid-atlantic states but is apparently absent from populations in new york and much of new england. blood samples of 40 woodchucks (marmota monax) from new york and from delaware were examined by starch gel electrophoresis, and 18 monomorphic and six polymorphic protein-coding genetic systems were identified. mendelian inheritance of variants of the six polymorphic systems was confirmed in 52 laboratory offspring of ... | 1987 | 3586195 |