The layers of EPITHELIAL CELLS which cover the inner and outer surfaces of the cutaneous, mucus, and serous tissues and glands of the body.

Synonyms: Epithelial Tissues, Mesothelium, Mesothelial Tissue, Epithelial Tissue, Tissue, Epithelial, Tissues, Epithelial, Tissue, Mesothelial, Tissues, Mesothelial, Epithelium, Mesothelial Tissues