microscopic view of bacteria or virus cells dividing and multiplying

bacteria virus cells dividing multiplying petri dish microscopic view science biology microbiology medical healthcare research laboratory experiment infection disease health organism single celled microorganism microorganisms amoeba protist protozoa protozoan flagellate ciliate germ germs pathogens prokaryote eukaryote dna cell division mitosis meiosis asexual reproduction binary fission budding sporulation growth colony