In addition, some xanthones have shown significant antimicrobial effects in fighting MRSA (methicillin-resistant staphylococcus aureus), which is a bacterial strain known for its tenacious resistance to pharmacologic antibiotics. One scientific study also showed that alpha-mangostin, beta-mangostin, and garcinone B to have pronounced inhibition effects on a strain of tuberculosis (Pedraza- Chaverri et al., 2008).