Nuclear Snail1 protein expression in colon carcinomas.

<p>Expression of Snail protein was determined as indicated in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0005595#s4" target="_blank">Methods</a> in samples corresponding to colon carcinomas using MAb EC3. Micrographs of several representative stained sections are shown. Panels A–E corresponded to tumours considered positive only in the stroma; panel F, just in the tumour, and panels G–P; in both compartments. The arrow in panel H labels a cell that cannot be clearly classified as tumoral or stromal. In panel O the arrow points at a cell entering a vessel. Bars indicate magnification.