Do differences in the endometrial transcriptome between uterine horns ipsilateral and contralateral to the corpus luteum influence conceptus growth to Day 14 in cattle?

This study relates to embryo-maternal interaction. The aim was to compare the transcriptome and ability of the ipsilateral and contralateral uterine horns to support preimplantation conceptus survival and growth to Day 14. Although differences in gene expression exist between the endometrium of uterine horns ipsilateral and contralateral to the CL in cattle, they do not impact conceptus survival or length between Days 7 and 14. The endometrial samples from both uterine horns were collected from synchronized heifers slaughtered on Day 5, 7, 13 or 16 post-estrus (n = 5 per time) and subjected to RNA sequencing.