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.

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 ...

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 ...

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 …

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 …

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.

Apr 8, 2024 · Neuroimaging is a discipline that deals with the in vivo depiction of the structure, function and pharmacology of the central nervous system (CNS), particularly our brain, in a noninvasive manner. 1, 2 The past two decades have witnessed remarkable strides in the development of new anatomical and functional imaging techniques that can shed light on many critical aspects of human brain function ...

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 ...

Jan 24, 2024 · New to cell culture? Then look no further. Here you will find a basic overview of all things cell culture, from setting up a cell culture lab to understanding basic principles and fundamental techniques. A great starting point to springboard into the world of cellular biology.

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 ...