What does histology study?

Histology is a branch of biology that is focused on the microscopic examination of tissues and cells. It involves studying the structure and organization of various types of tissues within organisms, which can provide insight into how these structures contribute to the overall function and health of an organism. By examining tissues at the microscopic level, histologists can observe details such as cell types, organization, and the relationships between different cell types and structures.

Understanding histology is critical for various scientific and medical fields, including pathology, where examining tissue samples can help diagnose diseases. The emphasis on microscopic structures distinguishes histology from other biological disciplines that focus on functions, chemical processes, or gross anatomical features. This specificity to tissue and cellular architecture is why the correct answer is indeed the study of the microscopic structure of tissues and cells.