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Characterization of boar semen exosomes (SPExo). (A) Transmission electron micrographs of semen exosomes from both HCR and LCR groups. Scale bar = 200 nm. (B) Representative nanoparticle tracking analysis (NTA) of semen exosomes from both HCR and LCR groups. (C) Western blot analysis of seminal plasma exosome marker proteins in the HCR and LCR groups, with sperm cell lysate used as the control group (n = 3). HCR, high conception rate; LCR, low conception rate.
