Psoralen and near ultraviolet light; a probe for study of control of protein synthesis.

Cells, Cultured Coumarins/pharmacology Depression, Chemical Enzyme Induction/drug effects,radiation effects Ficusin/pharmacology Nitrate Reductases/metabolism,radiation effects Plants, Toxic Protein Biosynthesis/drug effects,radiation effects Proteins/radiation effects RNA, Messenger/biosynthesis,radiation effects Tobacco/drug effects,enzymology,radiation effects Ultraviolet Rays

Coumarins Proteins RNA, Messenger Nitrate Reductases Ficusin