Cytoplasm and chromosomes appear as red fluores cenceunder the excitation of blue light, and the chromosomes are clear on staining with only improved carbol fuchsin.

• 单用改良苯酚品红染液对新鲜材料进行压片, 在蓝光激发下, 细胞质与染色体呈红色荧光, 染色体清晰。