Margaret Georgina Todd was a Scottish medical doctor and writer. She coined the term isotope in 1913 in a suggestion to chemist Frederick Soddy.

Sophia Louisa Jex-Blake was an English physician, teacher, and feminist. She led the campaign to secure women access to a university education, when six other women and she, collectively known as the Edinburgh Seven, began studying medicine at the University of Edinburgh in 1869. She was the first practising female doctor in Scotland, and one of the first in the wider United Kingdom of Great Britain and Ireland; a leading campaigner for medical education for women, she was involved in founding two medical schools for women, in London and Edinburgh, at a time when no other medical schools were training women.