通过以不同波长的光进行测试，研究小组发现，这些鱼的水平细胞在感光性方面比它们的“搭档”锥状细胞要弱上数千倍。

Testing light at different wavelengths, the team found that these fish horizontal cells are thousands of times less light sensitive than their partner cone cells.

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焦磷酸钙菱形结晶在红感光板偏振光下呈蓝白色(弱正双折射)。

This rhomboid shaped crystal of calcium pyrophosphate, which appears bluish-white (weak positive birefringence) by polarized light with red plate.

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