| abstract |
(57) [Summary] [Purpose] We have developed a method for releasing various drugs by using a carrier that can release a certain amount gradually and stably over a certain period of time and that is easy to treat after use. To do. [Structure] It is made of cellulose, has a spherical shape with a diameter of 0.05 m / m or more, has many cracks or small holes on the surface, and has many holes inside, and it is porous as a whole and is a mercury porosimeter method. In the pore radius distribution and pore volume measured by, 90% or more of the total pore volume has a radius of 2.5 μm. Use the cellulosic porous particles occupied by the above pores as a carrier. |