births
William Astbury, physicist and molecular biologist (died 1961)

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William Astbury
English biochemist
William Thomas Astbury FRS was an English physicist and molecular biologist who made pioneering X-ray diffraction studies of biological molecules. His work on keratin provided the foundation for Linus Pauling's discovery of the α-helix. He also studied the structure for DNA in…Source: Wikipedia (CC BY-SA)
February 25
Day of the year
February 25 is the 56th day of the year in the Gregorian calendar; 309 days remain until the end of the year.Source: Wikipedia (CC BY-SA)