bacteria citrobacter, gram-negative coliform bacteria from enterobacteriaceae family, 3d

citrobacter freundii enteric bacteria enterobacteriaceae 3d sepsis meningitis intestine illustration urinary coliform gramnegative bacteriology scientific science rodshaped research pathogenic microorganism microbiology microbe tract medical infection pathogen medicine microscope microscopy endocarditis septicemia diarrhea koseri amalonaticus soil water wastewater gastrointestinal uti pyelonephritis nephritis cystitis female gynecology urine diagram peritonitis infectious disease