bacteria neisseria cartoon character style with mysterious silent gesture

bacteri bacteria bacterial bacterium biology cartoon character cocci cute diplococci disease emoticon emotion expression funny generated gonorhea gonorrhoeae happy hushed illness illustration isolated magnification mascot meningitidis meningococcal meningococcus microbiology model mum mute neisseria objects pathogen pathogenic quiet reticent secret sensitive shape silenced silent smile spherical surface unhealthy vector