Histolo-what?

We have a histology test this coming Monday.  To give you an idea as to how prepared I was for this class, I learned what 'histology' meant on the first day when the professor explained it was the study of cells.  The material is very interesting, but my favorite part is the lab where we get to look at what we've been studying using the microscope.  I use my camera to take pictures of the slides so I can study them later - my classmates (for whom much of this is a review) have taken to playing with my camera while I'm not looking.  Case in point:

...on the off-chance anyone is interested, I was looking at a neutrophil (a type of white blood cell):