3d illustration
attack
bacillus
background
bacteria
bacteriemia
bacterium
biological weapon
biology
bugs
cells
closeup
clostridium
difficile
disease
epidemic
escherichia coli
experiment
fever
fighting
health
human
ill
illness
infection
klebsiella
macro
medical
medicine
micro
microbe
microbiology
microorganisms
microscope
microscopic
organism
pathology
presudomembraneous colitis
research
rodshaped
salmonella
science
scientific
scientific background
sepsis
sick
sickness
threedimensional
typhoid fever