 For example, annexin V staining followed by MACS can significantly improve pregnancy rates in couples with previous assisted reproduction failure.Sperm sorting by flow cytometry is an established technique in veterinary practice, and in the dairy industry most female cows are artificially inseminated with sorted semen to increase the number of female calves (using sperm sorting is less common in other species of farm animals, however artificial insemination is common).Artificial insemination of farm animals with sorted sperm is recognized by the Food and Agriculture Organization (FAO) as a promising way of increasing efficiency of agriculture needed to produce enough food for the growing human population.