Paraffin section of a non-small cell lung carcinoma (NSCLC) cell line, A549, xenograft tumor in SCID mice stained with picrosirius red and viewed with polarized light. The stain will quantify the amount of collagen in the tissue. Image was taken on the Olympus BX51 equipped with polarization components.

-- Submitted by Roya Navab, Ming-Sound Tsao lab, PMH.