Table 1.

Compatibility in Qa-1 haplotype between AC-SPL cells and the immunized recipient is necessary for the Suppression of the DTH reaction in the LTS

IMMUNIZED	H2	Qa-1	ACSPL	H2	Qa-1	IMM (μm)	IMM+AC-SPL cells (μm)	NAÏVE (μm)
C3H	k	b	BALB/c	d	b	360+/−40	120+/−18	56+/−10
C57BL10.s	s	b	SJL	s	a	229+/−41	300+/−57	15+/−5
SJL*	s	a	SJL	s	a	105+/−20	17+/−10	3+/−10

^*positive control for C57BL10.s

IMM=immunized

Twenty five thousand AC-SPL cells recovered from TNP-BSA-immunized BALB/c or SJL mice one week after the injection of TNP-BSA into the AC were injected id into a footpad of TNP-BSA- immunized C3H, C57BL10.s or SJL mice immediately after the footpad was challenged with epicutaneous PCl. Swelling was measured 24hr after challenge. Data represents the mean swelling ± SEM of 3 experiments, 9–12 mice/group.