tropheryma whipplei bacteria in human duodenum, the causative organism of whipple& x27;s disease

3d actinobacteria actinomycetes agent bacteria bacteriology causative concept conceptual disease duodenitis endocarditis grampositive human illness illustration infectious malabsorption medical medicine pathogenic pathology research science scientific sickness steatorrhea systemic tropheryma whippelii whipplei whipples