Antibacterial Activity Test of Extracts and Fractions of Cassava Leaves (Manihot esculenta Crantz) against Clinical Isolates of Staphylococcus epidermidis and Propionibacterium acnes Causing Acne

木薯叶（Manihot esculenta Crantz）提取物及其组分对引起痤疮的表皮葡萄球菌和痤疮丙酸杆菌临床分离株的抗菌活性测试