Table 4.

ERK2 Tyrosine²⁰⁴ Phosphorylation in GEC

Stimulus	Phosphotyrosine (% control)
Normal serum	1252 ± 469*
C8DS+C8	198 ± 36*
EGF	227 ± 46†
PMA	560 ± 183‡

GEC were incubated with normal serum (heat-inactivated serum in controls), C8DS+C8 (C8DS in controls), EGF, or PMA, as in Figure 6 ▶ . Cell lysates were immunoblotted with antibody to phosphoERK, and phosphotyrosine²⁰⁴ content was measured by densitometry. Each group consists of 4 experiments.

(*P < 0.025,

^†P < 0.04,

^‡P < 0.05 versus control).