"We have to try and shake them!" I yelled. I took the controls and tried to loosen the white blood cells from our nifty little ship, but it wasn't working out too well. "Wait! I've got it!" I slammed my hand on a button and the bus got even smaller, slipping between the antibodies with ease. "Problem solved!"<br/><br/>"Did you really just make us even smaller...?" asked one student, thoroughly unimpressed.<br/><br/>"Look, we may be small even by microbe standards, but we're still alive. That's the important thing!" I grinned.<br/><br/>"Alive and off course you mean." said the same kid, pointing to the map.<br/><br/>"Alive and off course, exactly. Wait a minute, off course!?" I checked the map. "Oh no, we're about to enter her left kidney... I'll turn us around, try and fight the current and maybe we can use this artery as a vein. We'll just have to hope our host isn't doing anything too active!" I turned the bus, now smaller than ever, around and tried to combat the blood flow with some success. The bus was pretty strong it seemed, just had to hope that Sabrina didn't suddenly decide to exercise.