TABLE A2.

Parameters in the in vivo CD8 model^b

Parameter	Symbol	Value (for rates, per day)
Resting activation	α	(2-5) × 10−10
NR “immigration”	β	See text
NR death rate	δNR	0.00017
MR death rate	δMR	0.00017 or 0.333
CTL death rate	δCTL	0.333
Reversion fraction	Revert	0.05
No. of doublings	ηd	8
Naïve cell cycles/day		2.0
Memory cell cycles/day		4.0
Naïve cell cycles before ES		4
Memory cell cycles before ES		1
Memory speed-up factor		7.0

^aDefined quantities: NR, naïve resting cells; MR, memory resting cells; η_d, number of programmed-proliferation divisions; ES, effector status.