A mammalian eye has approximately 70 different cell types

Bryan William Jones and Robert E. Marc, University of Utah​

A mammalian eye ​

The incredible complexity of a mammalian eye (in this case, from a mouse) is captured here. Each color represents a different type of cell. In total, there are nearly 70 different cell types, including the retina's many rings and the peach-colored muscle cells clustered on the left.

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