3d
attack
background
bacterium
biology
cells
close
closeup
colorfulbacteria
disease
epidemic
fighting
gastritis
gastroenteritis
health
helicobacter
human
illness
illustration
infection
isolated
life
macro
medical
medicine
micro
microbes
microbiology
microorganisms
microscope
microscopic
one
pathology
pylori
science
scientific
scientific background
shape
sick
sickness
spiral
threedimensional
ulcer
white
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