photichigigmment.

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经历响应光而经历化学变化的分子。这种化学变化可以用于传播信号，就像这种情况一样洛多在棒。

WATCH THIS 2-MINUTE NEUROSCIENCE VIDEO TO LEARN MORE ABOUT THE RETINA.

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观看这款2分钟的神经科学视频，了解有关视网膜的更多信息。