of the 67 +/- 7 fertilized ova per rat retrieved from oviducts flushed on day 1 , 52 +/- 8 , or 80 % , were accounted for as morulae or blastocysts recovered when oviducts and uteri were flushed on the morning of day 5 , demonstrating essentially normal developmental rates and high survival rates in reproductive tracts of superovulated females during the preimplantation period .
C0042149
uteri
C0700038
reproductive