Cellular individuality in the higher animals, with special reference to the individuality of the red blood corpuscle. (II)

Abstract

In experiments described in an earlier communication (Todd, 1930), dealing with the examination of the red blood corpuscles of the domestic fowl by means of artificially prepared iso-agglutinating sera, it was found possible, by the use of such sera, to differentiate the corpuscles of any particular fowl from those of any other individual of the same species, provided that the individuals in question were not close blood relations. In the case of closely related fowls, on the other hand, this could not always be done, at any rate by means of a single serum, as the red cells of certain members of a family were found to resemble one another so closely in their behaviour to the serum as to be indistinguishable from one another.