Biosafety classification is based on U.S. Public Health Service Guidelines, it is the responsibility of the customer to ensure that their facilities comply with biosafety regulations for their own country.

Hackett AJ, et al. Two syngeneic cell lines from human breast tissue: the aneuploid mammary epithelial (Hs 578T) and the diploid myoepithelial (Hs 578Bst) cell lines. J. Natl. Cancer Inst. 58: 1795-1806, 1977. PubMed: 864756Aggregates of casein protein granules, desmosomes, tight junctions, lipid droplets and vesicularized smooth endoplasmic reticulum were observed by electron microscopy.
As with Hs 578Bst, no estrogen receptors or endogenous viruses were detected.
Hackett AJ, et al. Two syngeneic cell lines from human breast tissue: the aneuploid mammary epithelial (Hs 578T) and the diploid myoepithelial (Hs 578Bst) cell lines. J. Natl. Cancer Inst. 58: 1795-1806, 1977. PubMed: 864756
Smith HS. In vitro properties of epithelial cell lines established from human carcinomas and nonmalignant tissue. J. Natl. Cancer Inst. 62: 225-230, 1979. PubMed: 283258
Littlewood-Evans AJ, et al. The osteoclast-associated protease cathepsin K is expressed in human breast carcinoma. Cancer Res. 57: 5386-5390, 1997. PubMed: 9393764
