Science Magazine | AAAS: Science Advances Follow Engineered probiotic Bifidobacterium for tumor-targeted pancreatic cancer therapy | Science Advances Engineered probiotic Bifidobacterium secretes effector T cell–boosting IL-2 variant to reduce pancreatic tumor growth in mice. https://www.science.org/doi/10.1126/sciadv.adz1388 science.org