Biology is the branch of science that primarily deals with the structure, function, growth, evolution, and distribution of organisms. It’s a methodological study of life and living things.
Biology is the scientific study of life. It spans multiple levels, from biomolecules and cells to organisms and populations12. All living things share common biological phenomena, such as reproduction, cell division, and the transmission of genetic material.
Precipitin reaction, specifically the ring test, is a classic immunological assay used to detect the presence of antigens or antibodies in a sample. It is based on the principle of antigen-antibody interaction, which forms a visible precipitate. The absence of a ring suggests a negative reaction, indicating the lack of the specific antigen or antibody. […]
The Salmonella-Shigella (SS) agar is a selective and differential culture medium specifically designed for the isolation and identification of Salmonella and Shigella species from clinical specimens. These bacteria are notorious for causing foodborne illnesses, commonly known as salmonellosis and shigellosis. The SS agar employs a unique combination of ingredients that suppress the growth of unwanted
Salmonella-Shigella Agar test: Principle, Composition, Procedure, Results interpretation Read More »
Agglutination test is a diagnostic technique used to detect the presence of specific antibodies or antigens based on their ability to agglutinate (clump together) in the presence of the corresponding antigen or antibody. This reaction can be macroscopically visible, where clumping indicates a positive result. The test is widely used in clinical diagnostics, blood typing,
What do you mean by DNA Microarray? In molecular biology, DNA microarrays, sometimes referred to as gene chips, are potent instruments that enable scientists to test thousands of genes’ expression levels at once. In essence, they are tiny labs on a chip that can produce enormous volumes of information regarding the activity of genes in
DNA Microarray: Principle, Types and steps involved in cDNA microarrays Read More »
Enumeration of bacteria refers to the process of counting the number of bacteria in a given sample. This process is essential in various fields, including microbiology, food safety, environmental science, and clinical diagnostics, as it helps determine the microbial load and assess the safety and quality of products and environments. Enumeration of Bacteria To determine
Enumeration of bacteria by plate count technique Read More »
What do you mean by MRS Broth test? The MRS Broth test is a crucial tool in the world of microbiology, specifically when working with a specific group of bacteria called Lactobacillus. This test helps us understand if a particular sample contains these important bacteria and, if so, how effectively they can ferment specific sugars. Let’s
MRS Broth test: Principle, Composition, Procedure, and Results interpretation Read More »
Echinococcus granulosus is a parasitic tapeworm that causes cystic echinococcosis (CE), also known as hydatid disease, in humans and other animals. This parasite has a complex life cycle involving two main hosts: the definitive host, where the adult tapeworm resides, and the intermediate host, where the larval stage (hydatid cyst) develops. Echinococcus granulosus Echinococcus granulosus
Imagine the complete human genome, a vast instruction manual that includes all the knowledge required to create and maintain an individual, compressed into a tiny area found in each cell’s nucleus. How is it possible? The complex arrangement and structure of chromatin, the protein-DNA complex that makes up chromosome building blocks, hold the key to
Immunochromatography Assay (ICA), also known as lateral flow immunoassay, is a rapid diagnostic test used to detect the presence or absence of a target analyte in a sample. It operates on the principle of antigen-antibody interactions and involves the migration of a liquid sample through a porous membrane via capillary action. Immunochromatography Assay (ICA) Immunochromatography
What do you mean by Bacitracin test? A microbiological test called the Bacitracin test is used to identify specific types of bacteria, namely group A streptococci, which are also referred to as Streptococcus pyogenes. What do you mean by Bacitracin ? Although use in animals leads to antibiotic resistance, bacitracin is a polypeptide antibiotic used
