Breast Neoplasms 2 Chromatin 2 DNA, Neoplasm 2 Deoxyribonucleoproteins 2 Female 2 Human 2 RNA Polymerase I 2 RNA, Neoplasm 2 Support, Non-U.S. Gov't 2 Transcription, Genetic 2 breast 2 breast cancer 2 chromatin 2 escherichia coli 2 euchromatin 2 genetic transcription 2 heterochromatin 2 human cell 2 in vitro study 2 rna 2 rna polymerase 2 theoretical study 2