Mycoplasma is the smallest (0.2 – 0.8 micrometers) free-living bacteria (light microscopy cannot detect it) that can pass through some filters (0.45-μm-pore-size) used to remove bacteria. It has smallest genome (a total of about 500 […]
Klebsiella pneumoniae is a Gram-negative rod shaped bacteria of genus Klebsiella and family Enterobacteriaceae. They are members of normal intestinal flora of humans and animals and may be isolated from a variety of environmental sources. K. pneumoniae was first […]
Superantigens are microbial peptides that can polyclonally activate a large fraction of T cells (up to 20%). They escape normal antigen processing by antigen presenting cells (APCs) and can directly bind to T cell receptor […]
Proteus are Gram-negative rod-shaped bacteria of the family Enterobacteriaceae. They are widely distributed in nature and also occur as normal intestinal flora of humans. An opportunistic pathogen, they are one of the common cause of […]
Gram staining requires the use of different chemical reagents which can be purchased in ready to use forms from commercial suppliers or gram stain reagents can be prepared at the laboratory by mixing different chemicals […]
Bacteria are often preserved in microbiology laboratory for many purposes such as to re-examine or to characterize further or to send to a national reference laboratory for confirmation etc. Selection of a particular storage method […]
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