RASSF1 and adrenal cortex carcinoma: We also observed a similar co-localization pattern for RASSF1A and microtubules (Figure6C; a) in normal adrenal cortex where microtubules appeared to have a punctate co-localization pattern of distribution with RASSF1A, in comparison to a more dispersed distribution found in ACC specimens that lack RASSF1A expression (Figure 6C; b).