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A, Representative raw bioluminescence traces for SCNs treated with 50 μM N-methylprotoporphyrin IX (NMP). B, Damping constants for SCNs treated with 10 μM or 50 μM NMP, as well as for control SCNs and SCNs treated with 30 μM heme (reproduced from Fig. 1). (*, significantly different from controls, p < .05) NMP also had a significant effect on circadian period (see Supplementary Table).
