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Two-cell mouse embryos obtained by in vitro fertilization were transferred into the ampulla of the fallopian tubes of pseudopregnant recipients through the wall of the tubes on day 1 of pseudopregnancy. A total of 112 embryos were transferred to 7 pseudopregnant recipients and 68 young (60.7%) were born.
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Naomi Nakagata (1992) studied this question.
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