Fig. 1From: Cell-free mitochondrial DNA in human follicular fluid: a promising bio-marker of blastocyst developmental potential in women undergoing assisted reproductive technologyThe relationship of cell-free nDNA and the relative cell-free mitochondrial DNA (cf-ND1/cf-β-globin ratio) levels in follicular fluids and oocyte presence and blastulation. No oocyte means that no oocyte was found in the follicular fluid. No blastocyst means that embryos did not develop into the blastocyst stage. *P < 0.05, **P < 0.01Back to article page