noun, suffix
research division; research club
Refers to a research department in a company or institution, or a research-oriented club at a school or university. The suffix use attaches to a field name (e.g., 物理研究部).
彼は大学の研究部で新しい薬を開発している。
He is developing a new drug in the university's research division.
高校のとき、生物研究部に入っていました。
In high school, I was in the biology research club.