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Table 1 17βHSD2 expression ratios and steroid determinations in term placenta and in endometrium during mid-late secretory phase

From: Human type 2 17beta-hydroxysteroid dehydrogenase mRNA and protein distribution in placental villi at mid and term pregnancy

17βHSD2 expression ratios (placenta/endometrium) Steroid levels
mRNA protein   T E1 E2
   Placenta (ng/g ± SD) 1.57 ± 1.51 52.64 ± 9.72 39.66 ± 12.76
25.4 ± 5.8 30–60a Endometrium (ng/g ± SD) n/a 0.064 ± 0.026 0.052 ± 0.021
   Ratio placenta/endometrium n/a 827 ± 376 751 ± 388
  1. aThis range of variation was estimated from comparison of the densitometric values obtained among endometrial samples and a series of dilutions of placental samples in Western blot experiments.