bacteria swimming in medium bacterium concept pili flagella superbug antibiotic resistant bacteria brain eating amoeba 3d renderi

abstract bacillus background bacteria bacterial bacterium biology cancer cell coli concept contagious disease enterobacteriaceae epidemic fever flu health human illness illustration lactobacillus macro medical medicine micro microbe microbiology microorganism microorganisms microscopic pathogen pathology salmonella science sepsis sickness superbug virus