The powerful potential of usnic acid in overcoming cancer drug resistance takes center stage. Through meticulous laboratory studies and innovative experimental approaches, this book unveils how this natural compound, derived from Usnea barbata, demonstrates remarkable abilities in reversing multidrug resistance in breast cancer cells. The research particularly focuses on the MCF7/ADR cell line, offering detailed insights into cellular mechanisms and therapeutic applications. By combining traditional knowledge with cutting-edge scientific methodology, this comprehensive study explores usnic...