Natural Killer cells (or NK cells, K cells, killer cells) as they are also known are basically a type of white blood cell (lymphocyte) integral to our immune system. These NK cells play a major role in fighting other virally infected cells and tumors. BioRest™ International uses advanced techniques to harvest these natural killer cells and through culture expansion methods, create a more robust and significant frontline defense system to prompt the body to heal itself. MK cells are effective in treating conditions like: