In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Q: Question: In a renal transplant patient, which of the following characteristics is the characteristic of acute renal rejection?
Options: <0> Interstitial infiltrate of B lymphocytes. <1> Preferably infiltrated with T lymphocytes in the renal interstitium and in the renal tubules. <2> Fibrosis and tubular atrophy. <3> Proliferative glomerulonephritis without affecting the interstitium. <4> Presence of circulating antidonant antibodies and renal infarcts.
A:
medicine