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2. In vitro fertilization in farm animals;Brackett,1992
3. In vitro fertilization of farm animal oocytes;Cheng,1985
4. Cortical granules during oocyte maturation and fertilization;Cran;J Reprod Fertil,1989
5. Influence of cumulus cell association during in vitro maturation of bovine oocytes on embryonic development;Critser;Biol Reprod,1986