lt will- be fixed by 10% formaldehyde in 1.5h after induced laborand be filled by 10% gelatin and a small quantity of prepared Chinese ink after fixed.

• 尽量保持胚胎新鲜，等候在产房，引出后不冷冻，立即放置于保温瓶中，1.；5h内开始滴入甲醛灌注固定。 依次剪开皮肤、胸骨和心包，行经左心室主动脉插管，滴注10%25甲醛2-3小时固定。