a humble nurse salmonella cartoon character holding syringe

assistant bacillus bacteri bacterial bacterium bifidobacteria bifidobacterium biology bulgaricus cartoon cell character cherichia coli cute design doctor emoticon emotion escherichia expression funny hands happy health healthy icon illustration injection lab laboratory legs mascot medic medical microbe microscopic mycobacterium nurse probiotic research salmonella science smile streptococcus style surgery syringe tool vector virus