Sagar Aryal, PhD 
Hypersensitivity refers to increased reactivity or exaggerated immune response of a host to an antigen to which it has been previously exposed. According to the most widely accepted classification of … Read more
Habitat of Streptococcus pneumoniae Morphology of Streptococcus pneumoniae Genomes of Streptococcus pneumoniae
Koch’s postulate forms the very basis of the pathogenic microbiology. The causality of almost all infectious diseases is based on the postulate and theories developed by Robert Koch, who is … Read more
Major Histocompatibility Complex (MHC) is a part of the genome of all vertebrates that code for molecules which are important in immune recognition. In humans, the MHC is a cluster … Read more
Biochemical reactions are significant in the identification of bacterial isolates and in the identification of different bacterial species. These tests depend on the presence of certain enzymes, such as catalase, … Read more
The term hypersensitivity denotes a condition in which an exaggerated immune response of a host results in inappropriate reactions that leads to destruction of host tissues. According to the most … Read more
Mechanism of Type II Hypersensitivity Reactions Examples of Type II Hypersensitivity Rhesus incompatibility (Rh hemolytic disease) During subsequent pregnancies, when Rh –ve mother conceive Rh +ve fetus, small numbers of fetal … Read more
Regulation of protein synthesis is necessary in all cells. Particularly, in the prokaryotic cells, regulation is achieved by means of genetic units called operons alongside a number of related mechanisms … Read more
Figure: Free living actinomycetes are ubiquitous in soil environments as well as in marine and fresh water ecosystems. In addition, they have an important ecological role in the turnover of organic … Read more
Hypersensitivity is increased reactivity or increased sensitivity by the animal body to an antigen to which it has been previously exposed. The most widely adopted current classification is that of … Read more
