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Nature 232, 230-235 (23 July 1971) | doi:10.1038/232230a0; Received 22 June 1971

"Self-recognition" in Colonial Marine Forms and Flowering Plants in relation to the Evolution of Immunity

F. M. BURNET

  1. School of Microbiology, University of Melbourne, Parkville, Victoria 3052
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Compatibility in colonial tunicates and coelenterates and self-incompatibility in flowering plants are primitive examples of "self" and "not-self" recognition which are not analogous to the immunological processes of vertebrates and which shed light on the way in which adaptive immunity may have evolved.