title: D.N.A. REPLICATION ANALYSIS IN IDENTIFYING THE CYTOGENETIC DEFECT IN DOWN'S SYNDROME (MONGOLISM).
mesh_terms: D001345:Autoradiography; D002875:Chromosomes; D020732:Cytogenetic Analysis; D004247:DNA; D004314:Down Syndrome; D006801:Humans; D013936:Thymidine; D014316:Tritium
chemical_list: D014316:Tritium; D004247:DNA; D013936:Thymidine
keywords: CHROMOSOMES; DNA; MONGOLISM; RADIOAUTOGRAPHY; THYMIDINE; TRITIUM