Table I.

Summary of surface marker modulations on CTL activated in vitro and in vivo^a

Surface Marker	In Vitro Cell Division Number^b							In Vivo Cell Division Number^c
Surface Marker	0	1	2	3	4	5	6	0	1	2	3	4	5
CD25	↑↑↑	↑↑↑	↑↑	↑	↑	↑	↑	↔	↔	↔	↑	↑↑	↑↑↑
CD69	↑↑↑	↑↑↑	↑↑	↑	↑	↔	↔	↑↑↑	↑↑↑	↑↑↑	↑↑	↑↑	↑
CD62L	↔	↔	↔	↔	↔	↔	↔	↔	↔	↓	↓	↓↓	↓↓↓
CD44	↑↑	↑↑	↑↑	↑↑	↑↑	↑↑	↑↑	↔	↑↑	↑↑	↑↑	↑↑	↑↑
Fas	↑↑	↑↑	↑	↑	↑	↑	↔	↑	↑	↑	↑	↑	↔
FasL	↑↑	↑↑	↑	↑	↔	↔	↔	ND	ND	ND	ND	ND	ND
TCR	↔	↓	↓	↓	↓↓	↓↓	↓↓	↔^d	↓^d	↓↓^d	↓↓↓^d	↓↓↓^d	NV^d

a Marker modulations are compared to naive 318 CTL: ↔, no modulation; ↑, 0- to 5-fold up-regulation; ↑↑, 5- to 10-fold up-regulation; ↑↑↑, ≥10-fold up-regulation; ↓, 0- to 5-fold down-regulation; ↓↓, 5- to 10-fold down-regulation; ↓↓↓, ≥10-fold down-regulation; ND, not done; NV, not visible.
b Data taken from Fig. 1⇑.
c Data taken from Fig. 3⇑.
d Data taken from Fig. 4⇓.