A novel approach for very early pregnancy diagnosis in swine by anti-early pregnancy factor (EPF) antiserum blocking enzyme-linked immunosorbent assay (ELISA)
Kai Quan1,2, Xingxu Zhao1*, Changxing Zhang2, Qiuliang Xu2, Hongfang Wei1, Junjie Hu1 and Yong Zhang1
1College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, Gansu730070, China.
2Zhengzhou College of Animal Husbandry Engineering, Zhengzhou, Henan 450011, China.
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