Figure 2: Protein profiles of fresh and liquefied semen. Lane 1, 0 hours; lane 2, 6 h; lane 3, 12 h; lane 4, 18 h; lane 5, 24 h; lane 6, 30 h; lane 7, 36 h; lane 8, 42 h; lane 9, 48 h; and lane 10, 72 h.