Abstract
Mammary tumours are the most frequent neoplasms in women and dogs, accounting for 50 to 70% of all neoplasms diagnosed in non-spayed female dogs. Clinically, mammary tumours may occur as single or multiple nodules within the mammary gland, and are associated with the glandular tissue or the teat. Different populations of cells influence tumorigenesis in the tumour microenvironment, such a…