Lina Solomonovna Stern was a notable biochemist, physiologist and humanist whose medical discoveries saved thousands of lives at the fronts of World War II. She is best known for her pioneering work on blood-brain barrier, which she described as "hemato-encephalic barrier" in 1921. Wikipedia
The definitive Wikipedia entry for Lina Stern. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Lina_Stern