Use Retin-A exactly as your doctor has prescribed it for you. Follow all directions on your prescription label. Do not use this medicine in larger or smaller amounts or for longer than recommended. Do not take by mouth. Retin-A is for use only on the skin.
Definition of wall for English Language Learners : a structure of brick, stone, etc., that surrounds an area or separates one area from another : the structure that forms the side of a room or building
Dictionary. Definition of cell wall. a thin membrane around the cytoplasm of a cell; controls passage of substances in and out of the cellSimilar Words: cell membrane, cytomembrane, plasma membrane Part Meronyms: cell.Similar Words: cell membrane, cytomembrane, plasma membrane Part Meronyms: cell. thin membrane around the cytoplasm of a cell; controls passage of substances in and out of the cellSimilar Words: cell membrane, cytomembrane, plasma membrane Part Meronyms: cell.