campylobacter bacteria swimming inside the intestinal lumen

campylobacteriosis gastroenteritis microorganisms campylobacter magnification helicobacter microbiology transmission dimensional microscopic unhygienic biological infectious healthcare microbiome intestinal bacterium corkscrew arthritis molecular structure poisoning poisonous condition digestive intestine infection digestion bacterial rendering undefined pathogen swimming diarrhea research epidemic organism medicine internal bacteria bacillus biology science illness disease animals extreme closeup medical anatomy abdomen microbe spiral sepsis jejuni animal colony system inside attack pylori three micro group colon lumen tract human organ swarm green pink