This post was most recently updated on August 26th, 2019Capsule stain is a type of differential stain which uses acidic and basic dyes to stain background & bacterial cells respectively so that presence of capsule […]
This post was most recently updated on August 26th, 2019Streptococcus pyogenes is the leading cause of uncomplicated bacterial pharyngitis and tonsillitis commonly referred to as strep throat. Acute diseases associated with Streptococcus pyogenes occur chiefly in the respiratory tract (sinusitis, otitis), bloodstream (sepsis, endocarditis, […]
This post was most recently updated on August 26th, 2019The cell wall of Gram negative bacteria is more complex than those of Gram positive bacteria. Gram negative bacteria contain an extra layer of cells called […]
This post was most recently updated on August 26th, 2019Morphological characteristics of pathogenic bacteria helps us to identify them, when we stain microbiological specimens and view them under microscope. In this blog post, i am […]
This post was most recently updated on August 26th, 2019The term peptidoglycan was derived from the peptides and the sugars (glycan) that make a molecule; it is also called ‘Murein’. It is found only in […]
This post was most recently updated on August 26th, 2019Transposons are mobile genetic elements which are found in almost all organisms. Scientists believe that transposons make up more than 40% of the human genome. They […]
This post was most recently updated on August 26th, 2019Concentrated deposits of certain substances which are presented/located in the cytoplasm of certain bacteria are known as cytoplasmic granules or inclusion bodies.They serves as storage areas […]
This post was most recently updated on August 26th, 2019Teichoic acids were discovered in 1958 by Armstrong and co-authors. The term teichoic acid encompasses a diverse family of cell surface glycopolymers containing phosphodiester- linked polyol […]
This post was most recently updated on August 26th, 2019Lipopolysaccharide (LPS) layer also called the outer membrane is the outer most layer present in the cell wall of gram negative bacteria. It is a characteristics […]
This post was most recently updated on August 26th, 2019Found mainly in Gram negative organisms, Fimbriae or pili (singlular: pilus) are hair like filaments (tiny hollow projections) that extend from the cell membrane into the […]
This post was most recently updated on August 26th, 2019Bacterial flagella are long, thin (about 20 nm), whip like appendages that move the bacteria towards nutrients and other attractants. Flagella are free at one end and […]
This post was most recently updated on August 26th, 2019Bacterial spores are highly resistant, dormant structures (i.e. no metabolic activity) formed in response to adverse environmental conditions. They help in the survival of the organisms […]
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