The particles of HRP labelling neurons were black immunogold-silver ones, while the CB immunoreactive cells were brown.

• 结果 HRP标记细胞与CB免疫阳性细胞清晰可辨；HRP标记细胞内为银染黑色颗粒；而CB免疫阳性细胞为染色均匀的棕色.