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 the Lateral Flow Test: Strengths, Limitations and ...
May 2, 2024 · Diagnostic testing is key in many areas including healthcare and preventative medicine, food safety and environmental monitoring. As such, analysts need appropriate and accurate assays suited to the sample type, analyte and testing environment that respect monetary, time and operator constraints.
Mann-Whitney U Test: Assumptions and Example - Technology …
Mar 25, 2024 · The Mann-Whitney U Test, also known as the Wilcoxon Rank Sum Test, is a non-parametric statistical test used to compare two samples or groups. In this article, we explore the basics of the Test and work through an example.
GC-MS Principle, Instrument and Analyses and GC-MS/MS
Feb 16, 2024 · The sample mixture is first separated by the GC before the analyte molecules are eluted into the MS for detection. 1 They are transported by the carrier gas (Figure 1 (1)), which continuously flows through the GC and into the MS, where it is evacuated by the vacuum system (6). 1. The sample is first introduced into the GC manually or by an autosampler (Figure 1 (2)) and enters the carrier gas ...
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 ...
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 ...
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 />
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 …
LC-MS – What Is LC-MS, LC-MS Analysis and LC-MS/MS
Jul 30, 2024 · Coupling liquid chromatography (LC) with mass spectrometry (MS) has provided scientists with a powerful tool to meet stringent analytical demands and their versatility and efficiency means LC-MS instruments have become desirable in many laboratories. In this article, we consider how LC-MS works, what it tells us and highlight some of the technique's strengths and weaknesses.
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 ...