black and white of mycobacterium tuberculosis complex, koch`s wand illustraton of bactea

anatomy bacteria bacterial bacteriology bacterium biology black book bronchial complex day diagnosis disease diseases drawn emergency epidemic exam fight graphic hand health healthcare hospital human illness illustration illustraton kochs laboratory life march medical medicine membrane micro microbe microbes microbiology microorganism microorganisms mycobacterium organism pulmonary respiratory science sick sickness tuberculosis vector wand white world