CORRESPONDENCE RE: GERADTS J, WILENTZ RE, ROBERTS H. IMMUNOHISTOCHEMICAL DETECTION OF THE ALTERNATE INK4A-ENCODED TUMOR SUPPRESSOR PROTEIN P14ARF IN ARCHIVAL HUMAN CANCERS AND CELL LINES USING COMMERCIAL ANTIBODIES: CORRELATION WITH P16INK4A EXPRESSION. MOD PATHOL 2001;14:1162–68.