BioMed Research International / 2020 / Article / Fig 2

Research Article

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

Figure 2

Scheme of spermatozoa vitrification. A, distance between the bottom of the strainer and the surface of the liquid agent (minimum 3 cm); B, liquid agent (liquid nitrogen or liquid air); C, foam box; D, strainer; E, spermatozoa suspension in the form of balls; F, pipette for the formation of 20 μl granules.