This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Cytopathology deals with ? 
Select and explain. 
A. Cellular changes for diagnosis of disease, B. Tissue changes for diagnosis of disease, C. Both 'a' and 'b', D. None of the above
A: Cellular changes for diagnosis of disease
Answer: A: Cellular changes for diagnosis of disease 
Explanation: Ans. is 'a' i.e., Cellular changes for diagnosis of diseaseCytologyCytology is the study of cells.Cytology is that branch of life science, which deals with the study of cells in terms of structure, function and chemistry.Robe Hooke is sometimes seen as the father of cytology.