If most organ cells, like in the liver, are replaced every three years or so, why isn’t a transplant eventually accepted by the new body?

Question

If most organ cells, like in the liver, are replaced every three years or so, why isn’t a transplant eventually accepted by the new body?

In: 350

Answer 1

because the donor liver cells replicate

if you loose your liver, and get a liver from someone else, you don’t have your own liver cells that could replicate, it’s the donor’s cells that replicate

in other words – new cells are created from old cells, if the old cells have donor’s DNA, then new cells will also have them.

the replacement cells dont come out of nowhere, they are born from the same cells they are replacing