“Indeed, if not told to live -- if not given some kind of active instruction from another cell -- cells automatically kill themselves. Cells need a lot of reassurance.” — Bill Bryson Copy Share Image
“When cells are no longer needed, they die with what can only be called great dignity. They take down all the struts and buttresses that hold them together and quietly devour their component parts. The process is known as apoptosis… — Bill Bryson Copy Share Image
