The investigation of histochemistry reflected that there were aloin precipitate in the central vacuole of aloin cells after the material was soaked in the liquid of 1% lead acetate [Pb (CH3COO)2].

• 而醋酸铅处理过的上述材料的切片观察表明，芦荟素细胞在细胞体积增大，并液泡化时，在液泡内出现蒽醌类物质沈淀物，在成熟细胞的大液泡中充满沈淀物，此时，在荧光显微镜下芦荟素细胞发出桔黄色荧光。