Q: 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.
Question: The primary function of interleukin 2 (IL-2) is:
Options: <0> Induce activation of macrophages. <1> Promote isotype changes in immunoglobulins produced by activated B cells. <2> Induce the synthesis of acute phase proteins by hepatocytes. <3> Promote the proliferation of T lymphocytes <4> Promote the proliferation of B lymphocytes
A:
pharmacology