Tears are made up of three layers: the oily layer on the outside, the watery layer in the middle, and the inner, mucus layer. The three layers together are known as the tear film.
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@tomcruise9317 Жыл бұрын
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@vivekphalke8287 Жыл бұрын
I wanted to know the difference between femoral sheath and femoral canal.... Is there any difference