The adoptive transfer of splenocytes from high-level chimeras as an assessment of alloreactivity in vivo. Splenocytes (10⁷) from B6 controls, IUT recipients of TCD or NTCD, or TBI-conditioned BALB/c recipients were transferred into NK-depleted BALB/c-SCID recipients. The number of mice per group and the Pvalue comparison with B6 controls are indicated. On the x-axis is days posttransfer and on the y-axis is the proportion of mice surviving.