Vawikhat tal naupan lai a hnap liak lo kan awm a rinawm loh, Miingo ho leh ram changkang tak taka naupangte pawhin an lo liak ve fo thin ani awm e. Anihna takah chuan hnap liah leh ei hi a that lohna a awm lo a mihring tan a tha hle zawk niin mithiamte chuan an hmu chhuak a ni.
Hmap hian taksa immune system a tik chak zual thei mai bakah ha a tih hrisel thu mithiamte chuan an sawi. Hnapa awm bacteria te hian kan taksa a immune sytem a ti chak a ni tiin Cannada rama Saskatchewan University a biochemistry professor Dr Scott Napper chuan a sawi.
Zirchianna dang Massachusetts University a an neih ah chuan Hnap hian kan taksa a bacteria tha lo awm tur lakah kan hrisel nan min veng thei a ni. Tichuan hnap hi toothpaste tha tak ang a nih thu an sawi. Ha nget tur pawh a ven theih thu an sawi bawk.
Australia lung lam zirchiangtu professor Friedrich Bischinger chuan mihring tana thil tha anih vangin zak lo a hnar khawhih leh hnap kawm chhuah hi ching ila thil tha tak a nih thu a sawi bawk.