chalk infographics of the human intestinal flora on the blackboard

intestine microbiota gut bowel infographics blackboard bacteria good bad lactobacilli bifidobacteria campylobacter clostridium enterococcus staphylococcus microorganisms aerobes anaerobes human organism proteus archaea vector pathogenic flora health medical colon bacillus germ system cell biological gastrointestinal enteric tract bacteriology doodle normal opportunistic percentage chart chalk