title: A study of plaque formation with avian RNA tumor viruses.
mesh_terms: D001354:Avian Leukosis Virus / Q000254:growth & development*; D002460:Cell Line; D002738:Chloroquine / Q000494:pharmacology; D004396:Coloring Agents / Q000494:pharmacology; D004121:Dimethyl Sulfoxide / Q000494:pharmacology; D004731:Endotoxins / Q000494:pharmacology; D004926:Escherichia coli; D006854:Hydrocortisone / Q000494:pharmacology; D011144:Polyvinylpyridine N-Oxide / Q000494:pharmacology; D001356:Reticuloendotheliosis virus / Q000254:growth & development*; D012190:Retroviridae / Q000254:growth & development*; D013696:Temperature; D014212:Tretinoin / Q000494:pharmacology; D014801:Vitamin A / Q000494:pharmacology
chemical_list: D004396:Coloring Agents; D004731:Endotoxins; D014801:Vitamin A; D014212:Tretinoin; D002738:Chloroquine; D011144:Polyvinylpyridine N-Oxide; D006854:Hydrocortisone; D004121:Dimethyl Sulfoxide