It's natural to want white teeth, but professional teeth whitening can be expensive. If you desire a brighter smile but don't want the hefty dentist bill that comes with it, consider at-home ...
Now, according to a study published in the journal Stem Cells Translational Medicine, researchers have shown it’s possible to cultivate lab-grown human teeth cells inside of a pig’s mouth.
Had a mechanical engineer designed the human frame, he would no doubt have built the jaws after the fashion of a nut cracker, with the muscles placed at the ends of the jaw levers, and the teeth ...
Infections by Hantavirus (Bunyaviridae) can cause severe human diseases, such as hemorrhagic fever with renal syndrome in Eurasia and cardiopulmonary syndrome in the Americas. These diseases are ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果