Physicians have many specializations and subspecializations into certain branches of medicine, which are listed below. The main branches of medicine are Basic sciences of medicine and Medical specialties.

医师在医学如下所列的某些分支还有许多专科和亚专科。医学的主要分支是基础医学和临床医学。

Basic sciences of medicine. Anatomy is the study of the physical structure of organisms. In contrast to gross or macroscopic anatomy, cytology and histology are concerned with microscopic structures.

基础医学，解剖学是研究有机体生理结构的学科，与大体解剖学相反，细胞学和组织学与微观结构相关。