Among them were two recent Cambridge graduates, William Astbury and John Desmond Bernal, who became interested in the problem of protein structure--Astbury as a result of being asked by Bragg to provide X-ray diagrams of wool and silk.
En el caso de Astbury, esto se originó en la petición que Braggs le hizo de proporcionar los diagramas por rayos X de la lana y la seda.