a picture of grinning haemophilus ducreyi cartoon concept

bacillus beam cartoon chains character coccobacillus country cute dermatology developing disease ducreyi education emoticon emotion expression fastidious funny genital grin grinning haemophilus happiness happy illustration infection isolated joyful laugh mascot medical medicine mug pasteurellaceae research rod science scientific shaped shine smile smirk sneer std sti streptobacillus transmitted treatment vector