Breast carcinoma tissue microarray, containing 23 cases of breast invasive ductal carcinoma, 1 each of breast invasive cribriform carcinoma, breast mucinous carcinoma, breast squamous cell carcinoma, breast carcinoma in situ and breast cystosarcoma phyllodes, 4 each of breast invasive papillary carcinoma and breast fibroadenoma, 2 each of breast invasive lobular carcinoma, breast apocrine carcinoma, breast adenosis and breast granulomatous inflammation, 3 breast hyperplasia, plus 1 normal breast tissue, duplicate cores per case (duplicated cores from the same patient were put onto upper and lower rows in the same position)