The uterine secretory cycle: shifts to the recurring physiology of endometrial outputs in the presence of a preimplantation embryo

The bovine endometrium secretes proteins during early pregnancy that vary (in both protein identity and abundance) to be in synchrony with luminal reproductive events. To uncover the identity of these proteins, transcriptomics was performed to understand the secretory capability of the bovine endometrium through the distinct phases of early pregnancy in virgin heifers. This dataset should serve as a baseline for understanding the profile of luminal secretory outputs during early pregnancy, setting the stage for functional interpretation of how the uterus supports and directs biological events ranging from sperm transport to preimplantation embryo development. Overall design: Bovine endometrial secretions across early pregnancy