PEG3 and disseminated peritoneal leiomyomatosis: However, if considered as independent of litter, expression of placental transporters Slc38a2 and Slc38a4 and of factors Igf2, and Peg3 was significantly reduced in LPD placenta (p<0.001, p = 0.001, 0.001 and 0.02, using individual mice as the unit of analysis.