In G2, CD56, CgA, NSE, vimentin and Ki-67 were higher in tumour tissue compared to those in non-tumour, and levels of CD44, CD45, CK7, DAXX, synaptophysin and PDX1 were lower in tumour tissue relative to those in non-tumour tissue (Figure 1B). This evidence concerns the gene MKI67 and neoplasm.