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Development of mouse 2-cell embryos after exposure to 1,600 lx visible light for various lengths of time. MEM0-30 and HTF0-30 are embryos exposed to visible light for 0, 10, 20 and 30 min and cultured in MEM-α and HTF media respectively. Bars with * above them are significantly (p < 0.01) different from MEM0 and HTF0
