Fig. 5

Relative fluorescence intensities of the 12 recombinant vectors with the 5′ end deletion in the SK-N-SH cell. Only one fragment (− 1550 bp to − 1409 bp) demonstrated a significant difference in relative fluorescence intensity. However, there might be several regulatory region located between − 1409 bp and − 1124 bp and between − 1124 bp and − 908 bp. Still, the relative fluorescence intensities were only slightly different. *** p < = 0.001