Cytology: The study of form or culture including the behavior of nucleus and other organelles is called cytology. Cytology means "the study of cells". Cytology is the branch of life science that deals with the study of cells in terms of function, structure and chemistry.

 Based on use of cytology it can refer to:

• Cell biology: This is the study of cellular anatomy, function or chemistry.
• Cytopathology: This is the study of cellular disease or the use of cellular changes for the diagnosis of disease.