nzb mice , dba/2 mice and reciprocal f1 hybrids between both strains were studied from birth to two months of age for the secretion of a serum thymic factor , thymulin ( formerly named facteur thymique serique ) and for spontaneous and antigen-induced immune responses : spontaneous splenic anti-2,4,6-trinitrophenyl ( tnp ) plaque-forming cells ( pfc ) , spontaneous igm serum levels , immune direct anti-sheep red blood cells ( srbc ) pfc and immune serum antibody production to human gamma globulin ( hgg ) as well as susceptibility to tolerance induction by deaggregated hgg .
C0003320
antigen
C0301872
immune responses