The emergency of drags-resistant fungi makes the systemic fungal infections represent a challenging problem for clinicians. The era of the classical antibiotics may be over because of their deficiencies. Recently, antimicrobial peptides have received increasing attention as their fundamental role in host innate immunity defense mechanism. Natural antifungal peptide is a potential candidate for the new antibiotics. APS, found by Prof. Pei Yan, et al, is a novel antifungal peptide isolated from Ba...