Extended data figure 9. Sample preparation and quality verification, related to Figure 5.
a, Experimental scheme of placenta cell purification. Sperm or oocytes were collected from B6GFP mice, and in vitro fertilized with the counterparts collected from the PWK strain. Embryos were transplanted into surrogate mothers. The placentae were harvested at E9.5, and dissociated into single cells by trypsin treatment before FACS sorting of GFP-positive cells.
b, Scatter plot showing the correlation between biological duplicates of RNA-seq samples.
c, Total numbers of the paternal and maternal SNP reads in the purified placental cells.