bacterial pneumonia, medical concept

3d aeruginosa air alveoli alveolus anatomical anatomy bacteria biology body bordetella breathing coli concept conceptual cough disease escherichia health human illustration infection internal klebsiella legionella legionnaires lungs medical medicine microbe microorganism mycrobacterium pathogen pathology pertussis physiology pneumonia pneumoniae pneumophila pseudomonas realistic respiration respiratory rodshaped science system tuberculosis whooping