A. Gestation day 3.5 (D3.5), wild-type (WT, +/+) uterus. B. D3.5 Lpar3
(−/−) uterus. C. D4.5 WT uterus. D. D4.5 Lpar3
(−/−) uterus. E. D5.5 WT uterus. F. D5.5 Lpar3
(−/−) uterus. G. D5.5 WT uterus enlarged from the black rectangle in E. H. D5.5 Lpar3
(−/−) uterus enlarged from the black rectangle in F. I. D6.5 WT uterus. M, mesometrial side; AM, antimesometrial side. J. D6.5 WT uterus enlarged from the black rectangle in I. K. D7.5 WT uterus. L. D7.5 WT uterus enlarged from the black rectangle in K. M. D4.5 WT ovary as a positive control. Prss35 sense probe was used as a negative control, no specific signal was detected (data not shown). N. D4.5 Prss35
(−/−) ovary. Red star, embryo; LE, luminal epithelium; Str, stroma; Dec, decidual zone; CL, corpus luteum; scale bars, 100 µm.