Final answer:
Lee signed up for courses in cytology to become a specialist in the analysis of cells. Cytology is the branch of biology that involves the microscopic examination and study of cellular structures and abnormalities.
Step-by-step explanation:
Cytology is the branch of biology concerned with the structure, function, and chemistry of cells. Cytotechnologists are experts who study cells using microscopic examinations and laboratory tests to determine which cellular changes are normal or abnormal. This field is essential for understanding how cells function, recognizing cellular abnormalities, and providing information that is vital for the diagnosis and treatment of diseases. Although histology is related, as it is the study of the shape and arrangement of cells in the tissue, and genetics studies heredity and the passing of traits from one generation to the next, cytology is the specific study dedicated to the microscopic evaluation of cell samples. Similarly, immunology is more concerned with the immune system and its responses.