ova• You can verify that for yourself by running your fingertipsova a slightly rough surface and then stopping.• In addition, stools were examined by microscopy for ova and parasites, including Cryptosporidium and Isopora.• This is the time at which hormonal changes halt the production of ova and end the menstrualcycle.• One of each of the 23 pairs has gone to one of the resulting sperm or ova and one to the other.• Finerain was being whiskedova the town in little flurries like water from a sprinklerhose caught by the wind.