only tissue which is originated from all the three layers of embryo -
a. connective tissue proper b. epithelial tissue c. muscular tissue d. all of these
the ducts of mammary gland are lined by which epithelium - ?
only tissue which is originated from all the three layers of embryo -
a. connective tissue proper b. epithelial tissue c. muscular tissue d. all of these
the ducts of mammary gland are lined by which epithelium - ?