DNA, Neoplasm human 8 Breast Neoplasms 6 Female 6 Human 6 article 6 Chromatin 4 DNA 4 Humans 4 Immunohistochemistry 4 Receptors, Estrogen 4 Support, Non-U.S. Gov't 4 Tumor Cells, Cultured 4 breast 4 breast cancer 4 cell culture 4 chromatin 4 immunohistochemistry 4 theoretical study 4 Adult 2 Aminolevulinic Acid 2 Animals 2 Antigens 2 Base Sequence 2 Carcinoma 2 Carcinoma, Hepatocellular 2 Cell Cycle 2 Cytogenetics 2 DNA Fragmentation 2 DNA Replication 2