胚内中胚层形成后,在脊索左右两侧,由内向外依次分化为A:间介中胚层、轴旁中胚层、侧中胚层B:轴旁中胚层、间介中胚层、侧中胚层C:轴旁中胚层、侧中胚层、间介中胚层D:间介中胚层、侧中胚层、轴旁中胚层E:侧中胚层、轴旁中胚层、间介中胚层 左右 胚层 向外 发布时间:2024-06-18 17:09:31