title: Mapping G1 phase by the structural morphology of the prematurely condensed chromosomes.
mesh_terms: D002453:Cell Cycle; D002459:Cell Fusion; D002460:Cell Line; D002471:Cell Transformation, Neoplastic; D002875:Chromosomes / Q000648:ultrastructure*; D003513:Cycloheximide / Q000494:pharmacology; D003609:Dactinomycin / Q000494:pharmacology; D006918:Hydroxyurea / Q000494:pharmacology; D007399:Interphase; D013936:Thymidine / Q000494:pharmacology
chemical_list: D003609:Dactinomycin; D003513:Cycloheximide; D013936:Thymidine; D006918:Hydroxyurea