In Sabrina's bladder, the bus floated in what must have been urine. "Okay, so this is the bladder. It's where urine is stored before being released from the body." I looked at my students.<br/><br/>"We're not going to go out this way are we?" one of them asked, slightly afraid.<br/><br/>"Um... I don't know. I'd say that depends on our host..." I answered them.