[Ca2+]i-changes in regA- cells in the presence of a Ca2+-chelator. Amoebae in nominally Ca2+-free medium were challenged with 1 mM BAPTA (final concentration) and subsequently with 1 μM cAMP. Arrows indicate the time point of addition of agents. The graph shows the average increase (mean ± s.e.m.).
Lusche et al. BMC Cell Biology 2005 6:12 doi:10.1186/1471-2121-6-12