however , there were no detectable changes in length of basic repeating subunits of 182 base pairs of dna , which include the nucleosome cores consisting of approximately 140 base pairs of dna , which when the cells were incubated at 37 degrees following irradiation , the sensitivity of cell nuclei to the nuclease first increased then decreased , reaching a similar level to unirradiated nuclei 6 h after irradiation .
C0007634
cells
C0007610
nuclei