A man with a shaved head and a button-up shirt looks into a microscope near a poster about red blood cells .
There is a better than even chance that a man with a shaved head , wearing glasses , is looking into a black microscope .
There is a better than even chance that a man with a shaved head , wearing glasses , is looking into a black microscope .
Chances are slight that a man with a shaved head , wearing glasses , is looking into a black microscope .
A man with a shaved head , wearing glasses , is looking into a black microscope .