DNA vs. RNA – 5 Key Differences and Comparison
WEBDec 18, 2020 · DNA is a much longer polymer than RNA. A chromosome, for example, is a single, long DNA molecule, which would be several centimetres in length when unraveled. RNA molecules are variable in length, but much shorter than long DNA polymers. A large RNA molecule might only be a few thousand base pairs long. Sugar.
SEM vs TEM - Technology Networks
WEBFeb 25, 2020 · In SEM, the sample, located at the base of the electron column, is scanned and the resulting electron scattering is analyzed to produce an image. In TEM, the sample is placed in the middle of the microscope and electrons pass through the sample before being collected. TEM offers information on ultrathin samples' inner structure, while SEM ...
NMR Spectroscopy Principles, Interpreting an NMR Spectrum and …
WEBNov 23, 2021 · Nuclear magnetic resonance (NMR) spectroscopy is a physicochemical technique used to obtain structural information about molecules. It is based on the physical phenomenon of magnetic resonance that was first demonstrated by Isidor I. Rabi in 1938. In the 1940s, two research groups independently obtained the first successful measurements of …
How Subliminal Images Impact Your Brain and Behavior
WEBJan 26, 2021 · However, there is evidence dating all the way back all the way to the 1960’s, which suggests that showing subliminal images improves behavioral performance. Though the behavioral change has been established through multiple publications, we still don’t know how the brain processes subliminal images. Sorin Pojoga, a …
An Introduction to Capillary Electrophoresis: Theory, Practice and ...
WEBSep 19, 2023 · The origins of these techniques (Figure 1) can be traced to the early development of electrophoresis in the 1930s by the Swedish biochemist Arne Tiselius. 1 In the 1950s, scientists, including the Swedish biochemist Stellan Hjert é n, introduced the use of chromatographic capillary tubes to the electrophoretic techniques in response to a need to use smaller amounts of sample and improve ...
Cell Culture Basics: Equipment, Fundamentals and Protocols
WEBMay 5, 2021 · Cell culture refers to the removal of cells from an animal or plant and subsequent cultivation in an artificial environment for scientific research. The first cell culture techniques were developed over 100 years ago and since then have contributed to tremendous breakthroughs in science. Today, it is a fundamental tool used in laboratories ...
Cell Potency: Totipotent vs Pluripotent vs Multipotent Stem Cells
WEBMay 29, 2018 · Differentiate into a limited range of cell types. Terminology. Toti = Whole. Pluri = Many. Multi = Several. Examples. Zygote, early morula. Embryonic stem cells, Induced pluripotent stem cells. Hematopoietic stem …
RNA-Seq: Basics, Applications and Protocol - Technology Networks
WEBApr 6, 2018 · RNA-seq (RNA-sequencing) is a technique that can examine the quantity and sequences of RNA in a sample using next-generation sequencing (NGS). It analyzes the transcriptome, indicating which of the genes encoded in our DNA are turned on or off and to what extent. Here, we look at why RNA-seq is useful, …
Neuroimaging Techniques and What a Brain Image Can Tell Us
WEBJul 7, 2022 · 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 ...
Immunoassays: A Guide - Technology Networks
WEBAug 26, 2020 · Immunoassays are biochemical tests used to detect the presence or concentration of a specific chemical, such as a toxin or hormone, in a solution using antibody-antigen reactions. Antibodies are Y-shaped proteins produced by the immune systems of humans and other animals in response to foreign substances (antigens) like bacteria, toxins and ...