US soldiers may soon begin using bacteria-killing chewing gum, to eliminate the many dental problems caused by not brushing their teeth for a very long time. The gum was developed by US army researchers. The gum consists of a protein that attacks the bugs that cause plaque. This gum could also, at some point, be released as a consumer product. Before that happens the gum must be tested on human subjects, and other trials that will determine whether or not it can be used.
What’s that image have to do with chewing gum?