salmonella typhi mascot style with grinning face

bacteria bacterial bacterium biology cartoon character cute design detail emoticon emotion expression funny germ germs glow grin happiness happy helicobacter icon illustration infection lab laboratory laugh mascot medical meningitis microbe microscope mug peritonitis poisoning purple salmonella salmonellosis sarcina science shine simper smile smiley smirk smirking streptococci style typhi vector