noun
histology
The branch of biology that studies the microscopic structure of tissues.
組織学の講義で、上皮組織の構造を学んだ。
In the histology lecture, we learned about the structure of epithelial tissue.
Cytology is the study of individual cells, whereas histology examines how cells are organized into tissues.
Compound of 組織 (tissue) and 学 (study, -ology).