The growth and postnatal development of callosal axons in the rat visual cortex(with emphasis in theborder region between areas 17/18a)were investigated by means of an anterograde tracing method with biotinylated dextran amine(BDA).

• 采用生物素结合的葡聚糖胺顺行示踪法研究了大鼠视皮质主要胼胝体投射区即17/18a交界区胼胝体轴突的生后发育和形态。