Quantification of pY immunoreactivity after solution treatments of 20 min. Except for the duration of the treatments, this figure is identical to Fig. 4. Sample sizes (n) are shown beneath each graph. #Bar for which P < 0.05 (compared with 0 by a one-tailed, paired t-test); in the text, we state that the parameter “tends or tended” to rise/fall. *Bar that is significantly different from 0, even after the very conservative Bonferroni correction (P < 0.05 divided by the number of treatment solutions considered); in the text, we refer to the change as “significant.” ‡Pair of bars for which P < 0.05 (compared with each other by a one-tailed, paired t-test).