Researchers tested 18 types of medicinal mushrooms to see if they could produce natural antibiotics. Most of them (16 out of 18) showed antimicrobial properties, with some being particularly effective against dangerous bacteria and fungi. The most promising mushroom strain (Hericium corraloides 4) showed strong activity against multiple disease-causing organisms. This research suggests that mushrooms could be valuable sources for developing new antibiotics to fight drug-resistant infections.