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Abstract

A series of chimeras was generated by injecting single normal, pathenogenetic, or androgenetic blastomeres carrying transgenic markers under the zona pellucida of nontransgenic eight-cell embryos. These chimeras were cultured to the blastocyst stage and sectioned, and the transgenic component was detected by in situ hybridization. No statistically significant different was found among the normal, parthenogenetic, and androgenetic chimeras in the number of chimeric blastocysts with a transgenic contribution to the inner cell mass (ICM), the trophectoderm, or both the ICM and trophectoderm. Since androgenetic and parthenogenetic cells were present in chimeras at a high frequency in both the ICM and trophectoderm at the blastocyst stage, but not in similar chimeras at late gastrulation, these cells must not respond normally to developmental signals subsequent to blastocyst formation and prior to late gastrulation. © 1989 Academic Press, Inc.

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Thomson, J. A., & Solter, D. (1989). Chimeras between parthenogenetic or androgenetic blastomeres and normal embryos: Allocation to the inner cell mass and trophectoderm. Developmental Biology, 131(2), 580–583. https://doi.org/10.1016/S0012-1606(89)80028-4

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