Figure 9From: Suberoylanilide hydroxamic acid induces apoptosis and sub-G1 arrest of 320 HSR colon cancer cellsImmunocytochemical analysis of p53, survivin, and p21 expression in 320 HSR cells. Cells were treated with or without SAHA (1 or 5 μM) for 48 h. Original magnification ×400.Back to article page