Mice of four strains were thymectomized neonatally and implanted with Millipore diffusion chambers containing thymic tissue from newborn mice of the NZB/Bl strain. Of a total of 60 surviving animals, 50 developed a positive Coombs’ test and other evidences of autoimmune hemolytic disease. Controls remained negative.

Various possibilities concerning the nature of the membrane-passing factor or agent are considered.

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© 1967 by American Society of Hematology, Inc.
1967
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