neisseria gonorrhoeae, neisseria meningitidis, pathogen. spherical, gram-negative bacteria. morphology. microbiology.

asporogenic bacilli bacteria bacterial bacteriology biological cell cells classification cocci coccus diplococcus disease endospores firmicutes flora form gonorrhea gonorrhoeae gram illustration infection inflammatory infographic isolated magnifier malignant medicine meningitidis meningitis microbe microbiology microscope microscopic morbific morphology negative neisseria nosogenic organism pathogen pathogenic pathology proteobacteria science shape spherical spore study type vector