TY - JOUR T1 - Bioactivity of two Turkish endemic Centaurea species, and their major constituents JO - Revista Brasileira de Farmacognosia A1 - Shoeb, Mohammad A1 - MacManus, Stephen M. A1 - Jaspars, Marcel A1 - Kong-Thoo-Lin, Paul A1 - Nahar, Lutfun A1 - Celik, Sezgin A1 - Sarker, Satyajit D. SN - 0102-695X UL - 10.1590/S0102-695X2007000200003 VL - 17 Y1 - 2007 PB - Brasil ER -