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NEET2016ZoologyNeural Control and CoordinationActual

Cornea transplant in humans is almost never rejected. This is because

Options

  1. Ait is composed of enucleated cells
  2. Bit is a non-living layer
  3. Cits cells are least penetrable by bacteria
  4. Dit has no blood supply.

Correct answer

D. it has no blood supply.

Step-by-step solution

Cornea is a transparent layer of tissue continuous with sclerotic that forms the front part of vertebrate eye over the iris and lens. It refracts light waves entering the eye onto lens. Cornea is avascular (i.e., has no blood supply). It is one of the first organs to be successfully transplanted because it lacks blood vessels.

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