This is a must-see interactive "slide" for any one with blood cells – that means you!. . . it takes you from the size of 12 point font down to a picometer (that's 1/trillionth of a meter)! And along the way you pass by a blood cell, e. coli bacteria, the flu virus, an anti-body, etc.! (Hint: move the tab below the picture).
I'm in love with this creation: Cell Size and Scale
Thank you University of Utah!