Table 1. Average and s.d.m. of the fraction of calcium responding cells and the triggering times T for the different types of T-cells (N = number of cells investigated).

Experiment	Triggeringfraction	Triggeringtime	N
Jurkat	0.6 ± 0.1	113 ± 40	366
J.Caml.6	0.2 ± 0.1	191 ± 30	629
J.Caml.6-wthLCK	0.4 ± 0.1	158 ± 20	302
J.Caml.6-TCRkdLCK	0.1 ± 0.01	163 ± 20	213