The scientist who studies the behavior and properties of cells is called a cell biologist.

Here are some other related terms:

* Cytologist: This term is more focused on the structure and function of cells, particularly their internal components.

* Molecular biologist: This field overlaps with cell biology, as they study the molecules within cells and how they interact.

* Developmental biologist: This area focuses on how cells differentiate and organize to form tissues and organs during development.

Cell biology is a vast and fascinating field, covering everything from the basic building blocks of life to the complex processes that drive cell division, communication, and death.