Algorithms|Artifacts|Breast Neoplasms|Cloning, Molecular|Computational Biology|Computer Graphics|DNA Primers|DNA, Complementary|Data Interpretation, Statistical|Fluorescent Dyes|Gene Expression Profiling|Gene Expression Regulation|Gene Expression Regulation, Neoplastic|Humans|Indicators and Reagents|Polymerase Chain Reaction|RNA, Complementary|Regression Analysis|Reproducibility of Results|Reverse Transcriptase Polymerase Chain Reaction|Sensitivity and Specificity|Software