On the contrary, the BBN/C1-C2 peptide structure based on the tropic short bombesin peptide and knottin binds to a considerable degree to all three tumor cultures, especially to the LnCap, since these cultures over-express the bombesin receptor, while the CHO-K1 culture expresses this receptor in the insignificant quantity and, therefore, the fluorescence signal was not registered during the experiment. Here, GRP is linked to neoplasm.