Then suspended at 15 cm above the liquid nitrogen which has a temperature of -196 degrees Celsius are not directly immersed into liquid nitrogen. It will damage the sperm cells were bathed in a cold too.
To hang in the liquid nitrogen level is 15 cm above the level which has a temperature of-196° c. It does not soak into the liquid nitrogen directly because it will cause political damage to sperm cells in the freezer too cold.
hung in a 15 cm above the liquid nitrogen temperature - 196 degrees Celsius, it will not freeze down directly in liquid nitrogen; it will cause damage to the sperm cells in the freezer with a cold too.