Fig. 5From: Yolk @ cage-Shell Hollow Mesoporous Monodispersion Nanospheres of Amorphous Calcium Phosphate for Drug Delivery with High Loading CapacityNitrogen adsorption-desorption isotherms and pore size distribution graphs of ACP-24-2 (a), ACP-48-2 (b), and ACP-48-10 (c)Back to article page