noun🔗Share上皮，表皮组织. A membranous tissue composed of one or more layers of cells which forms the covering of most internal and external surfaces of the body and its organs: internally including the lining of vessels and other small cavities, and externally being the skin."The doctor examined the tissue sample to see if the epithelium was healthy. "医生检查了组织样本，看看上皮细胞是否健康。medicinephysiologyanatomyorganbodybiologyscienceChat with AIVocabulary GamePractice Reading
