Immunohistochemical determination of estrogen and progesterone receptors in canine mammary tumors.

Mammary gland tumors are by far the most commonly found tumors in domestic dogs. Effective therapeutic procedures with prompt accurate diagnoses are of prime importance for this life threatening neoplasm. Although immunohistochemical methods provide valuable information such as the location and semi-quantitative data of the interested antigens in particular tumors, conventional methods like histopathological diagnosis remain useful and necessary for identification and classification of tumors.