Abstract
Summary
1. Prolonged parabiosis in rabbits, which have a complex and sensitive immunologic mechanism, has been unsuccessful. 2. Using a common peritoneal cavity method of parabiosis, rapid absorption of an antigen that is lethal to one of the parabiotic animals occurred in one day. 3. Administration of Evans Blue and pneumococcic polysaccharide prolonged duration of parabiotic union in rabbits by their effect on animals' immune reactions. 4. Secondary and tertiary attempts at parabiosis are rejected more rapidly than the initial parabiosis, again confirming the sensitivity theory of homograft rejection.
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