An Introduction to Culturing Bacteria - Technology Networks
Jan 24, 2024 · Whichever medium is chosen, this may be in liquid form as a broth culture, or agar may be added to set the media and allow bacterial cells to be grown on a solid surface.. Culture broth. Culture in liquid media, also known as a broth culture, gives the bacteria present easy access to the available nutrients compared to static bacterial colonies.
An Introduction to Transfection, Transfection Protocol and …
May 10, 2024 · In 1928, Griffith proposed the “transforming principle” having observed that bacterial cells could take up foreign hereditary genetic material. 1 This led to the discovery of DNA as that genetic material, 2 a discovery that enabled great strides in science. In the 1960s, viruses were employed to transfer genetic material into animal cells in …
Phagocytosis vs Pinocytosis: Definition and Function
Mar 21, 2022 · Examples of phagocytes and phagocytic cells. Phagocytes are a specialized group of cells that perform phagocytosis efficiently. This group includes immune cells such as macrophages, neutrophils and monocytes.Each type of phagocyte has a set of cell surface receptors that can initiate phagocytosis whenever they sense a target particle or pathogen.
Next-Generation Sequencing (NGS): Definition and Overview
Oct 28, 2024 · With these immense technological advances, the human genome project was completed in 2003. 9 In 2005, the first commercially available NGS platform, or second generation (2G) as it has become, was introduced, able to amplify millions of copies of a particular DNA fragment in a massively paralleled way in contrast to Sanger sequencing. 10 …
Genetic Modification Techniques and Applications
Jan 4, 2024 · As mentioned, different types of genetic modification can be made, including: Gene knockout – the removal or inactivation of a target gene.; Deletion mutation – the removal of one or more nucleotides from a genetic sequence.; Insertion mutation – the addition of one or more nucleotides into a genetic sequence.; Substitution mutation – the switching out of one or more nucleotides in a ...
Understanding Battery Types, Components and the Role of Battery ...
May 30, 2024 · Batteries are perhaps the most prevalent and oldest forms of energy storage technology in human history. 4 Nonetheless, it was not until 1749 that the term "battery" was coined by Benjamin Franklin to describe several capacitors (known as Leyden jars, after the town in which it was discovered), connected in series. The term "battery" was presumably chosen based on the analogy to existing ...
B Cells, Memory B Cells and Plasma Cells: B Cell Activation ...
Mar 19, 2024 · B cells, also known as B lymphocytes, are immune cells that drive the humoral adaptive immune response.They are one of three types of lymphocyte in the adaptive immune response – the others being T cells and natural killer (NK) cells. 1 B cells are distinguished by their ability to produce antibodies (known as immunoglobulins (Ig) when attached to B cells via a transmembrane domain), and the ...
SEM vs TEM - Technology Networks
Jan 24, 2024 · Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) are the two most common types of electron microscopy. TEM and SEM differ in how they work and what types of images they are able to capture. This article will overview SEM and TEM, including what they are, how they work, and how they compare to one another.<br /><br />
Atomic Absorption Spectroscopy, Principles and Applications
Jan 24, 2024 · The English chemist, Wollaston, was the first to observe dark lines in the solar spectrum that became known as Fraunhofer lines.In 1832, Brewster concluded that atomic vapors in the atmosphere absorbed some of the radiation from the Sun resulting in the detection of these lines. Bunsen and Kirchoff demonstrated soon after that each chemical element had a characteristic color or spectrum when ...
Agarose Gel Electrophoresis, How It Works and Its Uses
Feb 2, 2024 · Agarose gel electrophoresis is a form of electrophoresis used for the separation of nucleic acid (DNA or RNA) fragments based on their size. Negatively charged DNA/RNA migrates through the pores of an agarose gel towards the positively charged end of the gel when an electrical current is applied, with smaller fragments migrating faster.