Catalase Test Principle, Procedure, Result and Application.
The catalase test is a type of biochemical test which is used to detect the production of catalase enzymes in the organism.
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Xanthoproteic test – Principle, Procedure, Result, Application
Proteins are polymers of amino acids. They are complex organic compounds containing nitrogen, hydrogen, carbon and oxygen. Proteins are abundant in our everyday food e.g. egg, soya bean, pulses, fish, milk etc. The presence of proteins can be confirmed qualitatively by usign several tests, Xanthoproteic test is one of them. Due to the presence of characteristic side chains in them, certain amino acids exhibit typical color reactions that form the basis for their identification.
Modified Kirby-Bauer Disc Diffusion Method
Modified Kirby-Bauer disc diffusion test is a standard method that can be used as a regular method to assess the susceptibility test to a bacterial isolate in the clinical laboratory.
Myeloperoxidase (MPO) Stain – Principle, Procedure, Result
Myeloperoxidase is a lysosomal enzyme that can be found in the azurophil granules of neutrophils and monocytes.
Herpes simplex virus 1 (HSV-1)
Herpes simplex viruses (HSVs) are highly host-adapted viruses that can cause a variety of diseases in human hosts. (a) herpes simplex virus type 1 (HSV-1) and (b) herpes simplex virus type 2 (HSV-2) are the two forms of HSVs (HSV-2). Both types share DNA homology, antigenic determinants, tissue tropism, and illness symptoms, but their epidemiology … Read more
Influenza A Virus – Structure, Genome, Replication, Treatment, Prevention
What is Influenza Virus? Classification of Influenza Virus Influenza viruses are often classified into three species: influenza A, influenza B, and influenza C. Only types A and B are relevant to human health. Despite the fact that both viruses are capable of infecting humans, genus A often causes widespread disease and epidemics. Influenza A Virus … Read more
Polio Virus – Structure, Genome, Replicationm, Pathogenesis
Polio Virus Structure of Polio Virus In summary, the poliovirus is a small, simple virus that contains a naked RNA genome enclosed in a protein shell. The capsid is composed of four structural proteins that form the basic building blocks of the capsid. The virus does not have a lipid envelope and is insensitive to … Read more
Japanese Encephalitis (JE) Virus
Japanese Encephalitis (JE) Virus Structure of Japanese Encephalitis (JE) Virus Genome of Japanese Encephalitis (JE) Virus Epidemiology of Japanese Encephalitis (JE) Virus Transmission of disease Replication of Japanese Encephalitis (JE) Virus Signs and symptoms of Japanese Encephalitis (JE) Virus Japanese encephalitis (JE) is a viral infection that can cause inflammation of the brain. Symptoms of JE virus infection can range from mild … Read more
Varicella Zoster Virus – Definition, Structure, Genome, Replication
Varicella zoster virus Varicella, also known as chickenpox, is an infectious disease caused by the varicella-zoster virus (VZV). The virus causes chickenpox (typically primary infection in non-immune hosts) and herpes zoster or shingles (after reactivation of latent infection). Chickenpox causes a rash consisting of small, itchy lesions that scab over. It begins on the chest, … Read more
Coronavirus – Definition, Structure, Genome, Replication
Coronavirus Characteristics of COVID-19 Structure of Coronavirus Genome of Coronavirus Epidemiology of Coronavirus The novel coronavirus SARS-CoV-2 is the cause of the 2019 coronavirus disease (COVID-19). The virus was identified for the first time in December 2019 in Wuhan, China, and has since spread worldwide, resulting in a pandemic. Here are some essential aspects of the epidemiology of COVID-19: Replication of Coronavirus … Read more