Making headway in the coal tar maze.
D000818:Animals; D002273:Carcinogens; D003033:Coal Tar / Q000009:adverse effects*; D004396:Coloring Agents / Q000009:adverse effects*; D006801:Humans; D007880:Legislation, Drug; D051379:Mice; D051381:Rats; D012107:Research Design; D014481:United States
D002273:Carcinogens; D004396:Coloring Agents; D003033:Coal Tar