Nothing much today

As soon as seeing the result, I found the curves are strange. It seems even blank wells were also contaminated. Futhermore, somebody may had changed the setting of the computer connected to the BioRad microplate reader before I started my incubation yesterday, and so that the result wasn't printed out after I stopped the reading... :( Anyway, just redo what'd done yesterday again - adjust absorbance (A540 = 0.5), serial dilute, incubate and wait... till Monday and see what'll happen.