Dictionary.net

One or more layers of EPITHELIAL CELLS, supported by the basal lamina, which covers the inner or outer surfaces of the body.

Mesoderm bounding the primitive coelom and giving rise to muscular and connective tissue.

Part of mesoblast whence the serous cavities and muscles are developed.

The epithelioid part of the mesoderm, the peritoneal pleural lining cells, muscle plates, etc. [Gr.]