- Sperm vitality is reflected in the proportion of spermatozoa that are “alive”. Sperm vitality should be determined in semen samples with 50% or more immotile spermatozoa
- Based on the principle that dead cells will take up eosin, and as a result, stain red in color. The nigrosin provides a dark background which makes it easier to read the slides
- VitalScreen provides an accuracy check of the motility evaluation since the percentage of dead spermatozoa should not exceed the percentage of immotile spermatozoa
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