Back and forth, through a labyrinth of red and blue fibres, I wandered: here a cell — here another; red-stained leucocytes, these. No organisms here. Good.

The presence of many polymorphonuclear cells and gram-negative diplococci is suggestive of Neisseria gonorrhoeae, the etiologic agent of mucopurulent cervicitis and pelvic inflammatory disease (PID).

There are two main types of bacteria, and these categories reflect the microbes' biology and their vulnerability to different antibiotics.