The letters OM in Dale's title "Member of the Order of Merit" refer to the prestigious Order of Merit, an exclusive order of chivalry in the United Kingdom. Established in 1902 by King Edward VII, this honor is bestowed upon individuals who have rendered exceptional service in the fields of the arts, science, music, and literature.
The Legacy of Henry Hallett Dale: A Quiz on the Life and Work of a Pioneering Pharmacologist