microorganism icon, virus bacteria and microbe

allergen background bacteria bacterial bacterium cell coli collection coronavirus dirt disease dish dust escherichia fever flu fungi fungus germ germs gut hand helicobacter icon icons illustration immune infections infectious isolated lab logo logos lungs micro microbe microbes microbiology microbiota microorganism microorganisms mould organism organisms parasite parasitic pathogen pest petri prokaryote pylori rabies set shape sign signs silhouette stomach symbol vector virus viruses white