科學圖說

這個應該是咖啡豆吧！NO NO NO
(These Are Not Coffee Beans! No, No No!)

可別說它是咖啡豆喔！青蛙會生氣的！這是蛙卵要發育脊椎的重要時期。外型像咖啡豆中間那條凹溝兩旁的稜會慢慢合攏，形成重要的神經管。蛙卵的發育適合觀看細胞分裂與胚胎成長。下次到水池邊，看到這個畫面，可別以為是咖啡豆掉到水裡喔！它可是百分百的脊索動物~青蛙的卵。

To refer to these as coffee beans might be offensive to frogs! This is an important stage in frog development. From the outside, these frog eggs look like coffee beans. But, the edges along the groove will slowly close to form the neural tube. To better understand frog development, it is best to observe cell division and embryonic growth. Next time you are near a pond and see something that resembles this image, don’t think that coffee beans have fallen into the water. They are frog eggs.