Fig. 1. The 24×MBS cassette is inserted within the 3′UTR of β-actin mRNA, downstream of the zipcode (green) after the stop codon. The hybridization sites of the GSP probes (black arrows) are on the 5′ side (GSP1) or 3′ side (GSP2 and GSP3) of the 24×MBS insertion position. The 24×MBS cassette has 11 linkers that connect 12 units of the double stem-loops. Each of the 11 linkers is a hybridization site of the LK51 probe (red arrow).
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