Basic Medicine:Gene Time（2）
Microorganism has lives in the planet for million years, they can be bacteria, virus, and epiphyte. The number of microorganism in this mud is more than that of people on earth. People use microorganism in food production all the time, while didn't notice its exist and how they work. In a French town, people have been making a special cheese by using sheep milk for hundred years.
- Added：2006
- Country：America
- Duration：30
- Time of update：2011/8/10 17:15:03