Fig. 5From: Optimization of culture conditions for short-term maintenance, proliferation, and colony formation of porcine gonocytesNumber of gonocytes or gonocyte colonies observed after applying different medium changing regimens. The cultured cells underwent one of the following medium changing regimens: 1) Seeded with 3 mL of medium and the medium was routinely changed every 2 d (Routine); 2) Seeded with 2 mL of medium, followed by the addition of another 1 mL after 24 h, and then every 2 d, 1 mL of medium was removed from the well and replaced with 1 mL of fresh medium (Modified); 3) Seeded with 3 mL of medium but the medium was not changed for 7 d (Unchanged). The data are mean ± SEM. ab Data with different superscripts within each day differ significantly (P < 0.05). xy Data with different superscripts within each treatment over time differ significantly (P < 0.05). n = 5 replicationsBack to article page