•^:. V 



^\\^ 



Fig. n. rhrcc-nionth-old (AkxT6jF, iiuiusc tliynicctoniizcd at birth and 



grafted at 6 weeks with skin from C3H (upper left), C57BL (upper right), 



BALB/c (lower left) and DBA/2 (lower right). 



Fig. 9. Three-month-old (AkxT6)Fi mouse thymectomized at birth and 

 grafted at 6 weeks with skin from Wistar rat (upper) and C3H (lower). 



