a dedicated doctor tetracoccus cartoon character with stethoscope

anatomy bacteria bacterial bacterium cartoon character cute design doctor emoticon emotion expression funny happy healthy hospital icon illustration lab laboratory mascot medic medical microscope organism pathogenic physician pneumonia professor prokaryotic pyogenes research sarcinia science scientist smile specialist staphylococci staphylococcus streptococci streptococcus structure style surgery system tetracoccus tetrad tools vector vibrio