double headed green bacterium or virus closeup on white background

bacillus background bacteria bacterial bacteriology bacterium biology cell closeup concept disease division double epidemiology face flagella flu germ glutinous green headed health illness infection isolated magnified medical medicine membrane messy micro microbe microbiology microorganisms microscope microscopic oblong organism parasite pathogen protist realistic reproduction rodshaped science splatter staphylococcus streptococcus virus white