Important stressful events occur in embryonic development . heat shock proteins that are highly conserved proteins play important roles in repair of damages and in protection of cell from stresses 应激反应是生物体对抗外界不利环境因素的一种重要的保护性反应,在这个反应过程中细胞内产生大量的热休克蛋白( heatshockproteinshsps ) ,它们具有抵御损伤,保护细胞的作用。