Inhibitory effect of procyanidin oligomer from elm cortex on the matrix metalloproteinases and proteases of periodontopathogens
( Si Eun Song ) , ( Bong Kyu Choi ) , ( Sang Nyun Kim ) , ( Yun Jung Yoo ) , ( Moon Moo Kim ) , ( Sang Ki Park ) , ( Seok Sun Roh ) , ( Chong Kwan Kim )
