If you still don't know what color you should use. I suggest that you go with a brown-grey first. 如果你还是不知道该用什么颜色,我建议你从一种棕灰色开始。
Brown-red or brown-grey AchE-positive precipitates were seen at 8, 12 and 16 weeks. AchE-combined with silver stain section showed claw-like regenerating nerve fibers connecting with the AchE-positive areas. 术后8.12,16周的AchE阳性反应是棕红色或棕灰色沉淀,分布较规则,结合镀银的切片上还见神经纤维与AchE阳性部位相连,呈典型的爪状分枝。