Fig. 2. Transcript levels for DNA repair-related genes in porcine aged oocytes.

(A) Expression levels of genes involved in the HR pathway for DNA damage repair in porcine aged oocytes. (B) Expression levels of genes involved in the NHEJ pathway for DNA damage repair in porcine aged oocytes. a–cDifferent letters above the bars indicate statistically significant differences (p < 0.05). HR, homologous recombination; ATR, ataxia telangiectasia and rad3 related; ATM, ataxia telangiectasia mutated; IVA, in vitro aging; NHEJ, nonhomologous end-joining.