Bird's Nest contains a epidermal growth factor that able to stimulate cell growth, reproduction and regeneration. 燕窝亦有一种表皮生长因子，可以刺激细胞生长及促进细胞繁殖与再生。
And animals that also receive colostrum, containing the highest concentrations of epidermal growth factor, mature even more rapidly. 同时动物也同样获得含有极高浓度的表皮生长因子的初乳使发育更加迅速。
