We have been watching a lot of the Magic School Bus lately (as a reward for good behaviour) and one that we’ve seen several times shows what happens inside your body when you have a sore throat.
The timing couldn’t be better - my son has just come down with a cough and sore throat. I was struggling to get him to go to bed on his own last night - he’s always clingy when he’s ill - but did so by telling him that he needs to rest so that his white blood cells can fight the infection 
He was talking about killing bacteria when I gave him the medicine, too!
I love when his advanced knowledge helps me get things done without an argument :laugh: