Table 3.

Ca²⁺ uptake measurements

	n	KCa (pCa units)	Δ KCa	Vmax, nmol/mg/min
WT	5	6.54 ± 0.07	—	3.36 ± 0.23
Tbx5del/+	5	6.32 ± 0.09*†‡	−0.22	2.56 ± 0.18*†‡
Tbx5Vdel/+	4	6.22 ± 0.14*†‡	−0.19	2.46 ± 0.04*†‡
Tbx5Vdel/+;PLN−/−	4	6.73 ± 0.06	0.19	3.52 ± 0.51
PLN−/−	8	6.80 ± 0.06	0.26	3.75 ± 0.33

*, P < 0.05 vs. WT;

^†, P < 0.05 vs. Tbx5^Vdel/+;PLN^−/−;

^‡, P < 0.05 vs. PLN^−/−.