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The WI-38 cell line stemmed from earlier work by Hayflick growing human cell cultures. [2]In the early 1960s, Hayflick and his colleague Paul Moorhead at the Wistar Institute in Philadelphia, Pennsylvania discovered that when normal human cells were stored in a freezer, the cells remembered the doubling level at which they were stored and, when reconstituted, began to divide from that level to ...
[11] [13] [14] Descendants of the fibroblast cells from these fetuses have been growing in labs ever since, as the WI-38 and MRC-5 cell lines. They are still used to grow vaccine viruses today. [15] [1] As of March 2017, billions of vaccines have been given that were made using the WI-38 line alone. [16]
To produce viral vaccines, candidate vaccine viruses are grown in mammalian, avian or insect tissue culture of cells with a finite lifespan. [5] These cells are typically Madin-Darby Canine Kidney cells, [6] but others are also used including monkey cell lines pMK and Vero and human cell lines HEK 293, MRC 5, Per.C6, PMK, and WI-38. [7]
MRC-5 (Medical Research Council cell strain 5) is a diploid cell culture line composed of fibroblasts, originally developed from the lung tissue of a 14-week-old aborted white male fetus. [ 1 ] [ 2 ] The cell line was isolated by J.P. Jacobs and colleagues in September 1966 from the seventh population doubling of the original strain, and MRC-5 ...
Vaccine Excipients Adenovirus vaccine: This list refers to the type 4 and type 7 adenovirus vaccine tablets licensed in the US: Acetone, alcohol, anhydrous lactose, castor oil, cellulose acetate phthalate, dextrose, D-fructose, D-mannose, FD&C Yellow #6 aluminium lake dye, fetal bovine serum, human serum albumin, magnesium stearate, micro crystalline cellulose, plasdone C, Polacrilin potassium ...
The WI-38 cell strain he developed at the Institute with Paul S. Moorhead, Ph.D., became the substrate for the production of many human virus vaccines. [ 25 ] Helen Dean King , Ph.D.: a biologist and the first woman research professor at Wistar and one of the first in the U.S. [ 26 ] A faculty member from 1909 to 1950, Dr. King researched the ...
Hayflick was born May 20, 1928, in Philadelphia, Pennsylvania.He received his Ph.D. at the University of Pennsylvania in 1956. After receiving a post-doctoral fellowship for study at the University of Texas Medical Branch in Galveston under the tutelage of the renowned cell culturist Charles M. Pomerat (1905–1964), [8] he returned to Philadelphia, where he spent ten years as an Associate ...
TRIzol reagent contains guanidinium thiocyanate and phenol.. TRIzol is a widely used [1] chemical solution used in the extraction of DNA, RNA, and proteins from cells. The solution was initially used and published by Piotr Chomczyński and Nicoletta Sacchi in 1987.