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Phosphate-buffered saline (PBS) is a buffer solution (pH ~ 7.4) commonly used in biological research. It is a water-based salt solution containing disodium hydrogen phosphate , sodium chloride and, in some formulations, potassium chloride and potassium dihydrogen phosphate .
17 lut 2021 · To find out, host David Pogue investigates the surprising molecules that allowed life on Earth to begin, and ultimately thrive. Along the way, he finds out what we’re all made of—literally.
Crash Course (sometimes stylized as CrashCourse) is an educational YouTube channel started by John Green and Hank Green (collectively the Green brothers), who became known on YouTube through their Vlogbrothers channel.
Despite the diverse appearance and characteristics of organisms on Earth, the chemicals that make up living things are remarkably similar, often identical. I...
Former PBS headquarters in Crystal City, Virginia. PBS was established on November 3, 1969, by Hartford N. Gunn Jr. (president of WGBH), John Macy (president of CPB), James Day (last president of National Educational Television), and Kenneth A. Christiansen (chairman of the department of broadcasting at the University of Florida). [17]It began operations on October 5, 1970, taking over many of ...
8 lip 2019 · PBS and dPBS are the abbreviations of phosphate-buffered saline and Dulbecco’s phosphate-buffered saline, respectively. They are well-known buffer solutions that are commonly employed in biological research to maintain a consistent pH (between 7.2-7.6).
Crash Course Biology Preview. In 50 episodes, Dr. Sammy Ramsey will teach you biology, the science of life. This course is based on an introductory-level college and AP Biology curriculum.
