pseudomonas aeruginosa cartoon character style with mysterious silent gesture

aeruginoaattack bacillu bacteria bacteriemia bacterium biological biology bugs cartoon cells character cute disease emoticon emotion expression funny happy human hushed illness macro mascot medical medicine micro microbe microbiology microorganisms microscope microscopic mum mute nosocomial pathology pseudomonas quiet research reticent science scientific secret sensitive sick silenced silent smile virus zygot