3.5. Conclusion To conclude, our finding suggests that TMA instrumentation is appropriate for use as an accessory to molecular applications. No cross-contamination appears to occur between samples punched with the same device, although a cleaning step in between donor blocks is still recommended. Figure 4 Pyrograms highlighting results from an analysis of KRAS exon 2 codon 12 and 13. (A) G12D mutation; (B) WT; (C) G12V mutation; (D) WT; (E) G13D mutation; (F) WT.