![](https://www.endotext.org/wp-content/uploads/guthormone/2/figure27.png)
Figure 27. Summary of the expression of the SSTR subtypes analysed by Reverse transcription Polymerase Chain Reaction (RT-PCR) SSTR 2 are expressed in majority or neuroendocrine tumors and shows high binding affinity to somatostatin analogues. SSTR5 are rarely expressed by neuroendocrine tumors.(30).