Breast tumor tissue microarray (slide 19 of 2600 cases of breast cancer survey slide set), containing 69 cases of invasive carcinoma of no special type, 13 medullary carcinoma, 2 each of adenocarcinoma and mucinous carcinoma, 3 each of invasive papillary carcinoma and invasive cribriform carcinoma, 5 invasive lobular carcinoma, 1 each of signet ring cell carcinoma adenoid cystic carcinoma, carcinoid, tubular carcinoma, neuroendocrine carcinoma, metaplastic carcinoma and Paget's disease, duplicate cores per case