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Introduction of Salmonella Typhi Salmonella Typhi is a member of the family, Enterobacteriaceae and it is a Gram-negative bacillus, non-sporing, non-encapsulated, aerobic, or facultative anaerobe of size 2 to 4 × 0.6 µm that causes enteric fever (typhoid fever) and food poisoning or gastroenteritis. Biochemical …
Introduction of Gram-Negative Bacilli and Coccobacilli Bacteria ‘Gram-Positive Negative (GNB)‘ is also called Gram-Negative Rods (GNR) bacteria which take safranin after decolorization and stain pink or red on Gram’s staining but the shape should be rod ( for Gram-negative bacilli) but the combination of both …
Introduction of Gram-Negative Cocci (GNC) Bacteria Medically relevant Gram-Negative Cocci (GNC) Bacteria are Neisseria gonorrhoeae (causative agent of sexually transmitted disease), Neisseria meningitidis (causes meningitis), Moraxella catarrhalis (responsible for respiratory symptoms), Veillonella parvula (anaerobic gram-negative coccus cause osteomyelitis). List of Gram-Negative Cocci Bacteria S. No. …
Introduction of Letter The simple definition of a letter is a written, typed, or printed communication. It is sent in an envelope by post or messenger. It is very common that touches in our life numerous types. Thus to know the types of letters is …
Introduction of Gram-Negative Bacilli (GNB) Bacteria ‘Gram Positive Negative (GNB)‘ is also called Gram Negative Rods (GNR) bacteria which take safranin after decolorization and stain pink or red on Gram’s staining. The most of GNR bacteria are medically important and among them few are Escherichia …
Introduction of Gram Positive Rods (GPR) ‘Gram Positive Bacilli (GPB)‘ is also called Gram Positive Rods (GPR) bacteria which retain crystal violet dye and stain blue or purple on Gram’s staining. The most common medically important bacteria of GPR are Mycobacterium tuberculosis, Mycobacterium leprae, Listeria monocytogenes, …
Introduction of Gram Positive Cocci ‘Gram Positive Cocci (GPC)‘ bacteria retain crystal violet dye and stain blue or purple on Gram’s staining. The most common medically important bacteria of GPC are Staphylococcus aureus, Streptococcus pneumoniae, Enterococcus species, Streptococcus pyogenes, Streptococcus agalactiae and Staphylococcus saprophyticus. List …
Introduction of Hemolysis and Hemodigestion When the pure isolated colony of organism on a blood agar plate is exposed in bright transmitted light, we differentiate between hemolysis and hemodigestion since hemolysis is the process of killing blood cells by bacteria, and the area surrounding a …