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. 2010 Sep;51(9):4840–4847. doi: 10.1167/iovs.10-5253

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Figure 3. — Number of immunopositive cells during postnatal development under LD, LL, and DD cycles. One-way ANOVA for LD revealed a significant increase in the number of melanopsin-expressing cells throughout the postnatal period (P < 0.001). No significant differences were detected under constant light conditions (P > 0.05). However, in animals maintained under DD conditions, the number of immunostained cells increased significantly in two intervals: P1 to P5 and P11 to P21 (one-way ANOVA; P < 0.001). n = 4 animals per group.