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A polymorphic transcript is maternally expressed in Peromyscus placenta and embryo. RNA was isolated from BW and PO parental strains and from reciprocal F1 hybrids. For the hybrids, the maternal species is listed first. Single strand conformation polymorphism RT-PCR analysis detected a difference between the two parental strains. (A) E14.5 placental RNA. (B) E14.5 whole embryo RNA.
