Open Access Research article  Characterization of ductal and
lobular breast carcinomas using novel prolactin receptor isoform
specific antibodies  Erika Ginsburg1*, Stefanie Alexander1,
Sarah Lieber1, Sarah Tarplin1, Luwanda Jenkins1, Linda Pang1,
Christopher D Heger2, Paul Goldsmith2 and Barbara K Vonderhaar1
Author Affiliations  1 Mammary Biology and Tumorigenesis
Laboratory, National Cancer Institute, National Institutes of
Health, Bethesda, MD 20892 USA  2 Antibody and Protein
Purification Unit, National Cancer Institute, National
Institutes of Health, Bethesda, MD 20892 USA  For all author
emails, please log on.  BMC Cancer 2010, 10:678 
doi:10.1186/1471-2407-10-678   Received:26 August 2010
Accepted:13 December 2010 Published:13 December 2010  © 2010
Ginsburg et al; licensee BioMed Central Ltd.     Prolactin is a
polypeptide hormone responsible for proliferation and
differentiation of the mammary gland. More recently, prolactin's
role in mammary carcinogenesis has been studied with greater
interest. St