灵菌红素(prodigiosins,PG)是一类具有三吡咯环结构的暗红色的脂溶性色素,是由放线菌、沙雷氏菌及一些其他细菌产生的次级代谢产物......

Lord of the Flies is generally considered to be the masterpiece of William Golding,one of the most famous writers in the......