Hello,

Hope you are doing good.

Coming to your question, the  branch of biology that deals with the study of cells or cell biology is called cytology. It is derived from the Greek word “kytos”, meaning vessel.

Cytology deals with  the study of the cell, cell theory, different types of cell- unicellular, multicellular, cell organelles along with their functions, prokaryotes, eukaryotes, and different kinds of cellular process.a It revolves around the concept that the cell is the fundamental unit of life.

Good Luck