The gonococci are Gram negative diplococci, each of which measures 0.6 to 0.8 micrometres in size. They are characteristically arranged like coffee grains. They are often found inside the cell in the cytoplasm of neutrophils of pathological material, particularly urethral pus.
The gonococcus (Neisseria gonorrhoeae) is a pathogenic bacterium that causes a very common and highly infectious sexually transmissible disease, that is, gonorrhoea. The bacterium is specific to human beings where it is always pathogenic. There are no healthy carriers.