Using the emulsification method, microspheres containing metamizole sodium,ciprofloxacin lactate and norfloxacin lactate were prepared, with gelatin as polymer coatingmaterials.

• 本文采用乳化法制备了空载明胶微球和包载安乃近、乳酸环丙沙星、乳酸诺氟沙星的兽用明胶微球。