Table 2. Effect of CCCP treatment of COCs on mitochondrial DNA copy number and nucleic DNA copy number in cumulus cells, oocytes, and spent culture medium.

Groups	Cumulus cells		Oocyte		Spent culture media (100 μl)
	No. of examined	mtDNA	No. of examined	mtDNA	No. of examined	mtDNA	Nucleic DNA	Ratio of mt/nucleic
Control	11	514.7 ± 22.2	58	170,334 ± 8,642.7	11	1482.9 ± 142.9 a	90.3 ± 11.5	17.7 ± 1.4 a
CCCP	11	497.3 ± 12.1	58	152,143 ± 9,791.0	11	2190.5 ± 185.6 b	84.9 ± 11.2	29.1 ± 3.5 b

Data are represented as mean ± SEM value. a–b: P < 0.05. Mitochondrial DNA copy number (mtDNA) was determined by real-time PCR targeting mitochondrial short sequences.