Table 2.

Limiting dilution assays for T cell function in spleens of DW/J Snell dwarf and control mice

Assay	Units	dw/dw 3–7 months	+/? 15–17 months	dw/dw 15–17 months
pHTL	% of Y	109  ± 26 (6)*	55  ± 20 (5)	95  ± 12 (3)†
pCTL	% of Y	79  ± 15 (5)	47  ± 10 (5)	81  ± 18 (6)

^*Values represent percent of response compared to young control mice run on the same day of assay, ± standard error of the mean; numbers in parenthesis show the number of mice tested. 

^† One mouse in this group had a pHTL response 354% of the normal young control; this animal, whose response is >3 SDs above normal young controls, is omitted from the calculation.