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The oval or elliptical red blood corpuscles are generally supposed to be found in mammals only in the group to which the camel and its close congeners belong. It is interesting, therefore, to record a case of what we must consider an anatomic or physiologic sport of this kind in the human species. Mr. Melvin Dresbach1 reports the case of a healthy young mulatto in the University of Ohio in whom it was accidentally found that the red corpuscles of his blood were elliptical instead of round. The case was carefully investigated for a period of four months, specimens being taken at various intervals, and in every specimen many cells of abnormal shape were noted. Dresbach says the erythrocytes were distinctly elliptical, slightly biconcave, non-nucleated cells which did not adhere in rouleaux. In many of these the biconcavity was scarcely perceptible. The estimate was that fully 90 per cent,
OVAL BLOOD CORPUSCLES IN MAN.. JAMA. 1904;XLII(13):837. doi:10.1001/jama.1904.02490580027014