Table I.

Proliferation of KJ⁺ CD25⁺ and KJ⁺ CD25⁻ Cells in Response to Immunization

	Percent M2 (CFSE low)	Median fluorescence channel (within M2)	Number KJ+ cells (×10-3)
KJ+ CD25−
No immunization (day 3)	6.34	37.8	6.32
Day 3 after immunization	71.34	54.25	22.5
Day 6 after immunization	85.8	59.64	93.0
Day 8 after immunization	98.56	33.76	111.36
Nondraining LN (day 3)	11.73	32.78	1.64
KJ+ CD25+
No immunization (day 3)	2.54	39.24	4.35
Day 3 after immunization	63.21	77.74	12.7
Day 6 after immunization	89.52	99.65	31.0
Day 8 after immunization	93.63	87.32	39.9
Nondraining LN (day 3)	10.36	42.17	2.05

The data depicted in Fig. 4 A were quantitated in terms of the percentage of KJ⁺ cells that were CFSE low, the median fluorescence channel within the divided population, and the absolute number of CD4⁺ KJ⁺ cells at each time point.