doctor keith knutson joins me now.elcome to fox news sunday. >> think it's great to be here. jennifer: are we one step closer to a cure question requires a such a breakthrough moment in cancer research and treatment? >> you know, cancer really is a multitude of different diseases. even within breast cancer there are lots of different subtypes of breast cancer. so it is very important to try to understand what you're going to target and how you were going to target it. and then go through the steps that you can show you can target it and it can be safely administered to people. it is a challenge and it takes several years to do this. you really need to stick with it and that is the important steps that we go through as we of course research and developing cancer vaccines. jennifer: how do these cancer vaccines work? >> not too unlike an infectious disease vaccine. what's all on her mind right now of course is covid vaccines. it's not really too different than that. what we want to do is identify what is foreign and then

keith knutson of the mayo clinic. plus, making music, not war.ainian musicians, including recent refugees, fight for their country far from the front lines, and send a message to putin. all right now on "fox news sunday." ♪ ♪ >> jennifer: and hello again from fox news in washington. as an abiding returned to the campaign trail this week trying to write a wave of positivity into midterms just ten weeks from now, but the white house planned to wipe out billions of dollars in student loans is getting major pushback from republicans and even some democrats, who question its fairness, and the president himself is facing questions over his harsh new comment about some members of the republican party. in a moment, we will talk with a former top aide to the president who now advises the dnc, former congressman cedric richmond, but first, let's turn to lucas tomlinson at the white house. lucas. >> jen, president biden kicking off his campaign outside the nation's capital where he took amed former president donald trump and his supporters. >> president bid