title: Homocopolymer sequences in the spacer of a sea urchin histone gene repeat are sensitive to S1 nuclease.
mesh_terms: D000818:Animals; D001483:Base Sequence; D002843:Chromatin / Q000648:ultrastructure*; D004720:Endonucleases; D008040:Genetic Linkage; D006657:Histones / Q000235:genetics*; D011995:Recombination, Genetic; D012617:Sea Urchins / Q000235:genetics*; D015719:Single-Strand Specific DNA and RNA Endonucleases
chemical_list: D002843:Chromatin; D006657:Histones; D004720:Endonucleases; D015719:Single-Strand Specific DNA and RNA Endonucleases