Fig 2.

Expression of PTPIP51 in healthy epidermis, SCC, BCC, BD and KA as detected by RT-PCR RT-PCR was performed using primers specific to PTPIP51 as given in the Material and methods section, β-actin was amplified as an internal positive control and probes lacking reverse transcriptase served as negative controls (CO). (A) Samples of healthy epidermis (EP), keratoacanthoma (KA) and Bowen's disease (BD). The white bar between the marker and the lanes indicates that the additional lanes depicted by this photograph were cut out since they were probed with tissue samples unrelevant for the present study. (B) Samples of healthy epidermis (EP), basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). For BCCs and SCCs, RT-PCR was performed with tumour tissue of three different patients (BCC1–3 andSCC1–3).