Microbiology Isolation methods Isolation non-pathogenic yeasts escherichia coli- Micro organisms Micro-organisms Microbes Microfungi Myxomyectes membrane filtration technique microbiology microfungi mycoplasmas - suipneumoniae non - pathogenic yeasfs myxomycetes phytophthora phytophthora - phythium - salmonellace streptococci