有个囊(nánɡ)萤夜读的故事,讲的是晋朝一个叫车胤(yìn)的小孩儿,因家境贫寒点不起灯,就抓了许多萤火虫装进纱布口袋,用来照明读书。萤火虫为什么会发光呢?在萤火虫腹部,有一部分表皮极薄,这部分表皮下藏着一个“发光器”。它是一簇特殊的大细胞,细胞里有一种被人叫做“萤光 There is a capsule (firefly) read the story about a Jin Dynasty car called Yin (yìn) children, because of poor family can not afford the lights, caught a lot of fireflies into the gauze pocket, used to lighting reading . Why fireflies shine it? In the firefly belly, there are some extremely thin epidermis, hidden under the epidermis of a “light device.” It is a cluster of special macrophages, a cell called “Fluorescent.”