Eye lens layers, coloured scanning electron micrograph (SEM). The lenses in mammalian eyes are made up of layers upon layers of tiny cells that interlock with one another via a series of tiny projections. These projections can be seen along the edges of the cells. These layers spread the cells very thinly and can be up to 12 millimetres in length. These cells do not contain the normal organelles present in other animal cells. This sample is from the lens of a sheep. Magnification: x830 when printed at 10 centimetres across.
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