你以為這是哪位藝術家的作品嗎？其實這是某位在美國加州大學的實驗室上班的技師兒子，在外出遊戲回家後的隨手打的手印。我們常聽到「飯前要洗手」，理由就在這裡。。。手印由大大小小不同顏色菌落組成，猛然一看煞是好看，不過近看就不是那麼回事了。
The Microbes on the Handprint of an 8-Year-Old After Playing Outside
We all know our bodies are home to countless millions of bacteria and microorganisms, but without seeing them with our bare eyes it’s almost impossible to comprehend. This petri dish handprint created by Tasha Sturm of Cabrillo College, vividly illustrates the variety of bacteria found on her 8-year-old son’s hand after playing outdoors. The print itself represents several days of growth as different yeasts, fungi, and bacteria are allowed to incubate.
It’s safe to say almost everything you see growing in this specimen is harmless and in many cases even beneficial to a person’s immunity, but it just goes to show why we sometimes it’s good to wash our hands.
文章來源：癮科技 and http://www.thisiscolossal.com/2015/06/germ-handprint/
Author: Christopher Jobson on June 7, 2015