DEFICIENCY OF THE SIXTH COMPONENT OF COMPLEMENT IN RABBITS WITH AN INHERITED COMPLEMENT DEFECT

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Abstract
A strain of rabbits with an inherited complement deficiency was shown to lack the sixth component of the hemolytic complement system. A method was elaborated for the partial purification of this component from normal rabbit serum. Upon injection of partially purified rabbit C'6 into C'6-deficient animals, an antibody was obtained which specifically inhibited the hemolytic activity of C'6. The data suggest that C'6-deficient serum either lacks the C'6 molecule or contains it in a chemically modified and inactive form.