The sstR2-targeting abilityof [18F][natGa]Ga-(SiFA)SeFe-rhTATE2 was also successfully validated by PET in ovo.Further, the biodistribution of [18F][natGa]Ga-(SiFA)SeFe-rhTATE1 and [18F][natLu]Lu-(SiFA)SeFe-rhTATE3 was assessed in AR42J tumor-bearingCD1-nu/nu mice 1 h p.i.. This evidence concerns the gene SSTR2 and neoplasm.