Sagar Aryal, PhD 
Biochemical Test of Streptococcus pyogenes Characteristics Properties (Streptococcus pyogenes) CAMP Negative (-ve) Capsule Capsulated Catalase Negative (-ve) Gram Staining Positive (+ve) Hemolysis Beta Motility Non-Motile OF (Oxidative-Fermentative) Fac. Anaerobes PYR … Read more
Cytoskeleton Definition The cytosol of cells contains fibers that help to maintain cell shape and mobility and that probably provide anchoring points for the other cellular structures. Collectively, these fibers … Read more
Pathogenesis of Mycoplasma pneumoniae M. pneumoniae is an extracellular pathogen transmitted by respiratory droplets expectorated during coughing which then adheres to the respiratory epithelium by means of a specialized attachment … Read more
B lymphocytes, the cells that produce antibodies, were so called because in birds they were found to mature in an organ called the Bursa of Fabricius. In mammals, no anatomic … Read more
Laboratory diagnosis of Mycoplasma pneumoniae Specimen Ideal specimens are throat swabs and nasopharyngeal aspirates, lung biopsies, expectorated sputum. Washings are more reliable than sputum specimens because most infected patients have … Read more
Until recently, cells were thought to be integral and discrete components of tissues, and their state was determined by cell differentiation. However, under some conditions, stem cells or their progeny … Read more
Image: Working colonization model for STEC infecting humans and persisting in ruminants. (A) The diagram shows a human intestinal epithelial cell displaying the first stages of colonization by STEC in … Read more
Biochemical Test of Salmonella Typhi Characteristics Salmonella Typhi Capsule Negative (-ve) Catalase Positive (+ve) Citrate Negative (-ve) Flagella Positive (+ve) Gas Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Negative (-ve) … Read more
Image Source: BioCote Some of the characteristics are as follows: Basic Characteristics Properties (Acinetobacter baumannii) Bile Solubility Negative (-ve) Capsule Capsulated Catalase Positive (+ve) Citrate Positive (+ve) Coagulase Negative (-ve) … Read more
Habitat of Acinetobacter baumannii The first Acinetobacter found in soil was discovered in 1911 by M.W. Beijerinck. It is associated with the aquatics environment. It has been recovered from soil, water, … Read more
