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. Author manuscript; available in PMC: 2010 Apr 21.
Published in final edited form as: Neuroscience. 2009 Feb 13;160(1):51–60. doi: 10.1016/j.neuroscience.2009.02.013

Fig. 2.

Fig. 2

Small increases in [Ca2+]I are required for hypoxia to induce ischemic tolerance in hippocampal slice cultures. A. BAPTA-AM buffers increases in [Ca2+]i during hypoxic preconditioning. * significant increase in [Ca2+]i (P<0.05) compared to baseline; numbers indicate number of observations. B. BAPTA-AM present during preconditioning eliminates induction of tolerance to oxygen and glucose deprivation (OGD). * indicates significant reduction in cell death following HPC (P<0.05). C. Representative propidium iodide fluorescence images from slices at baseline, after OGD (no preconditioning), in preconditioned slices 48 hr after OGD, and in a slice treated with BAPTA-AM before preconditioning.