MicroRNA profiling of seven human breast cell lines and one normal breast RNA sample

The small-RNA fraction from seven breast cell lines and one normal breast RNA sample (Ambion) was hybridized against a pool of small-RNA fractions from the six cancer cell lines. We used home-made microRNA-micro arrays (R.Livesey lab, Biochemistry Department, University of Cambridge). For ea ch sample (cell line or normal) we hybridized two technical replicates and two dye-swaps which makes a total of four data sets for each sample.