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. 2010 Jun 23;299(3):C665–C671. doi: 10.1152/ajpcell.00129.2010

Fig. 2.

Fig. 2.

[Ca2+]i oscillations in HL-1 cells comprise two components: a slow increase in [Ca2+]i preceding a larger, transient increase in [Ca2+]i. The duration of the slow increase was 10 min but varied from seconds to minutes depending on the frequency of the transient increases in [Ca2+]i (not shown).