title: Single-strand breaks in ribosomal DNA of sea urchin (Lytechinus variegatus) sperm.
mesh_terms: D000818:Animals; D004247:DNA; D008297:Male; D009691:Nucleic Acid Denaturation; D012270:Ribosomes; D012617:Sea Urchins; D013094:Spermatozoa
chemical_list: D004247:DNA