BC Children’s Hospital Research Institute has found a way that kids’ immune systems might be able to be used to help fight off the most common type of childhood cancer.Researchers found that when infant mice were infected with a mild virus, their immune system kicked into action and those mice didn’t develop pediatric acute lymphoblastic leukemia.This is a type of cancer that around 40 kids, usually between the ages of two and five, develop every year in B.C. Although most will be successfully treated, around one in 10 relapse, according to the BC Children’s Hospital Foundation.This discovery was published last month in Blood, the flagship journal of the American Society of Hematology, as a “plenary paper,” which is the journal’s way of flagging it as a big deal. That sentiment was echoed by Amy Lee, an assistant professor of molecular biology and biochemistry at Simon Fraser University.Lee was not involved with this study but does work with Tobias Kollmann, one of the study’s authors.Researchers worked with…