Florence Rena Sabin (1871-1953) American anatomist and medical researcher. Early description (1900) of Mees lines of the fingernails secondary to arsenic poisoning
Mees lines: white bands traversing the full width of the nail, running parallel to the lunula, with no palpable ridges. As the nail grows they bands move distally and finally disappear when trimmed. The finding was initially related to acute arsenic poisoning.