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.
Deborah Sampson Gannett, better known as Deborah Sampson, was a woman who disguised herself as a man in order to serve in the Continental Army during the American Revolutionary War All Things we can do. added 2 new photos.