a small oval or round horny structure in the skin on the inner side of the legs of the horse. Since the architecture of chestnuts varies in every individual, they may be used, like fingerprints of man, for positive identification of individuals.
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... century, chestnut blight, a nonindigenous fungal disease from Asia, broke out near New York City and quickly infected almost all American Chestnuts on the continent, driving the species to ecological extinction. American Chestnuts now exist only as scattered small trees that become infected ...
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