Abstract
Abstract In this work we validated the previous scientific reports done in pooled samples by two different groups, over the miRNA expression in single blood from pregnant cows. Particularly we indagate the expression at day 28 after embryo transfer of let 7a, and 26a as well as 16 microRNAs (miRNA) family. By qPCR technique, we demonstrated that let 7a, and 26a increase maximum 2.1 and 2.6 fold change respectively in pregnant vs non-pregnant nulliparous heifers. This represents an exciting opportunity to use the differential expression of these miRNAs as early pregnancy markers and better understand the relationship with the cellular and molecular interaction between mother and embryo.
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