Patient 1 and patient 2 both had a transplant. Which most likely explains why patient 1 had a successful transplant and patient 2 did not?

After a transplant, the recipient’s immune system may recognize the donated organ as foreign and attack it. Long-term immunosuppressive therapy helps prevent this rejection, while immunosuppressants given only during surgery may not protect the organ afterward. Therefore, patient 1’s long-term treatment most likely explains the successful transplant; patient 2’s limited treatment could have allowed rejection.

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