Late DNA replication in the sex chromosomes of Didelphis virginiana.
D000818:Animals; D001854:Bone Marrow Cells; D046508:Culture Techniques; D004247:DNA / Q000096:biosynthesis*; D004261:DNA Replication; D008297:Male; D009893:Opossums / Q000378:metabolism*; D012730:Sex Chromosomes / Q000378:metabolism*; D014316:Tritium
D014316:Tritium; D004247:DNA