set of 2 human microbiota blue outline banners

abstract allergen ameba amoeba background bacteria bacterial bacteriology banner biochemistry blue care cell chemical cholera circle collection color colored concept design diseased dust element epidemic epidemiology experiment flora formula fungi germs health horizontal human hygiene icon illness illustration infection influenza isolated life line linear logo macro medical microbiology microbiota microscope modern mold molecule oraganism organism outline pandemic pathogenic science scientific set shape sick sign silhouette style symbol technology test thin vector virus worm