BioMed Research International / 2020 / Article / Fig 3

Research Article

Aseptic Technology for Cryoprotectant-Free Vitrification of Human Spermatozoa by Direct Dropping into Clean Liquid Air: Apoptosis, Necrosis, Motility, and Viability

Figure 3

Progressive motility of vitrified spermatozoa. F, fresh spermatozoa (control group); LN, group of spermatozoa vitrified in liquid nitrogen; LA, group of spermatozoa vitrified in liquid air. Data are expressed as mean ± SEM. Significant difference versus control, .