title: The effect of ultraviolet light on the cyclic nucleotide system of human fibroblasts.
mesh_terms: D002478:Cells, Cultured; D000242:Cyclic AMP / Q000378:metabolism*; D006152:Cyclic GMP / Q000378:metabolism*; D006801:Humans; D012867:Skin / Q000378:metabolism / Q000528:radiation effects*; D014466:Ultraviolet Rays
chemical_list: D000242:Cyclic AMP; D006152:Cyclic GMP