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Bacillus species: Introduction, Classification and Medically Important species, Pathogenecity, Lab Diagnosis and Treatment
Introduction Bacillus species Bacillus species are ubiquitous in nature and remain both free-living (non-parasitic) species, and two parasitic pathogenic species, B. anthracis causes anthrax; and B. cereus causes food poisoning and thus these two Bacillus species are medically significant. The word, Bacillus is Latin which means stick. Bacillus is a genus of Gram-positive, [embed]https://www.youtube.com/watch?v=B9RWYq0YNA0[/embed] rod-shaped bacteria, a member of the phylum Firmicutes, with 266 named species. Bacillus species are obligate aerobes as well as facultative anaerobes...
Strongyloidiasis: Introduction,Life cycle of Strongyloides, Morphology,Symptoms, Lab Diagnosis and Treatment
Introduction of Strongyloidiasis Strongyloides stercoralisis a human pathogenic parasitic roundworm causing the disease strongyloidiasis. The Strongyloides stercoralis nematode can parasitize humans. The adult parasitic stage lives in tunnels in the mucosa of the small intestine. The genus Strongyloides contains 53 species. Geographic distribution of Strongyloides stercoralis This infection is associated with fecal contamination of soil or water. so, it is a very rare infection in developed economies than in developing S. stercoralis can be found in areas with...
Bacterial Capsule Demonstration Using Negative Staining Method: Introduction, Principle, Procedure, Result Interpretation and Keynotes
Introduction of Bacterial Capsule Demonstration The capsule is the outermost layer of bacteria. It, usually is composed of polysaccharides, known as capsular polysaccharides (CPS) but it may be constructed of other materials. e.g. Bacillus anthracis capsule is made of poly-D-glutamic acid. Capsule Staining is a special type of staining. Bacterial capsule observation is sometimes cumbersome since the capsule is non-ionic, so neither acidic nor basic stain and that will adhere to its surface. Another fact is most capsule materials are water-soluble,...