Healthy cow uterine fluid (UF) was collected from synchronized cattle at day 0, 7 and 16 after ovulation. Extracellular vesicles (EVs) were isolated from UF. UF-EVs from same cattle on different timepoints were subjected to LC-MS/MS. Additionally, one sample before EV purification was subjected to LC-MS/MS (corresponding EV sample is named 1D0).