In humans,corneal transplants are rarely reje | vedclass

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(D) The cornea is the transparent anterior part of the eye. It is an avascular structure,meaning it lacks a direct blood supply. Because the immune sy

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It does not have a blood supply.

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(D) The cornea is the transparent anterior part of the eye. It is an avascular structure,meaning it lacks a direct blood supply. Because the immune system's cells (like lymphocytes) reach tissues primarily through the bloodstream,the lack of blood vessels in the cornea prevents the immune system from easily recognizing or attacking the transplanted tissue. This phenomenon is known as 'immune privilege',which is why corneal transplants have a very high success rate and are rarely rejected.

In humans,corneal transplants are rarely rejected. This is because:

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