Table 1.

The effects of weak acid addition and removal on intracellular pH and cytosolic calcium levels

	5 mM propionate addition	5 mM propionate removal	20 mM propionate addition	20 mM propionate removal
ΔpHi (pH units)	−0.18 ± 0.04 ** (6)	0.25 ± 0.05 * (3)	−0.31 ± 0.04 ** (3)	0.34 ± 0.08* (3)
Δ[Ca2+]i (nM)	−5 ± 2 (4)	5 ± 3 (4)	−7 ± 16 (4)	31 ± 9 † (4)

All data are shown as means ±s.e.m.

^*P < 0.05

^**P < 0.01 compared to resting pH_i values

^†P < 0.05 compared to resting [Ca²⁺]i; n values are presented in parentheses.