Abstract
Summary
The serum proteins of two dove species, Pearlneck and Ring dove, and their hybrid were indistinguishable by direct pre-cipitin-tests; i.e. the three kinds of serum reacted at the same dilution with antisera for each of the two species. Following absorption, however, of the antiserum to one species by the serum of the other, a differentiation of the serum-proteins was readily made. The serum of the species-hybrid appeared to possess a combination of the pre-cipitinogens of both parental species.
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