[ Note: The distance between cities in Nevada (US) distance chart below is straight line distance (may be called as flying or air distance) between the two locations in Nevada (US) calculated based on their latitudes and longitudes. This distance may be very much different from the actual travel distance.].
1 Gram-negative cocciâ Neisseria meningitidis causes meningitis while Neisseria gonorrhoeae causes the sexually transmitted disease gonorrhea. 2  Gram-positive bacilliâ Bacillus anthracis (anthrax) can cause skin infections or pneumonia (also a bioterrorism agent); Listeria monocytogenes can cause foodborne illnesses.
Microscopic image of gram-negative Pseudomonas aeruginosa bacteria (pink-red rods). Gram-negative bacteria are a group of bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation, making positive identification possible.ram-negative bacteria are a group of bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation, making positive identification possible.