Activation of the hedgehog pathway has been implicated in the development of cancers in various organs, including brain, lung, mammary gland, prostate and skin.
en.wikipedia.org There are many theories on how mammary glands evolved, for example, it is believed that the mammary gland is a transformed sweat gland, more closely related to apocrine sweat glands.
en.wikipedia.org In humans expression of the gene is limited to the adult mammary gland, a correlation between increased expression of the gene and breast cancer has been reported.
en.wikipedia.org Humans normally have two complex mammary glands, one in each breast, and each complex mammary gland consists of 1020 simple glands.
en.wikipedia.org In the human mammary gland, the intralobular duct is a part of the glandular system that resides within the lobules.
en.wikipedia.org