RNA-ISH of metastatic mouse PDAC. PDAC metastatic lesions in liver, which itself does not express satellites (left). Large, glandularm etastatic tumor deposits are readily identified by standard histological evaluation and stain for satellite (middle). Satellite expressing micrometastases in liver (right; arrowheads). 200x magnification (scale bar = 100 μm). For more information, please see Figure S2 in the Supporting Online Material. This image relates to an article that appeared in the Jan. 13, 2011, issue of Science Express, published by AAAS. The study, by Dr. Ting at Massachusetts General Hospital in Boston, Mass., and colleagues was titled, "Aberrant Overexpression of Satellite Repeats in Pancreatic and Other Epithelial Cancers."