Tumor types: There has been a long-lasting debate about classification of canine mammary tumors. According to the World Health Organization (WHO), canine mammary tumors are histologically classified into four categories: malignant tumors, benign tumors, unclassified tumors, and mammary hyperplasias/dysplasias.
Gandy dancer is a slang term used for early railroad workers who laid and maintained railroad tracks in the years before the work was done by machines.
Victorian ballroom dances at the Gaskell Ball in Oakland, California. Historical dance (or early dance) is a term covering a wide variety of Western European-based dance types from the past as they are danced in the present. Historical dances are danced as performance, for pleasure at themed balls or dance clubs, as historical reenactment, or for musicological or historical research purposes. Dances from the early 20th century can be recreated precisely, being within living memory and after the advent of film and video recording.