Figure 1. Isolation of multicopy integrant strains by the CRISPR/Cas9 system.(A) Procedures for isolation of multicopy integrant strains by the CRISPR/Cas9 system. Fluorescent markers are shown by green (EGFP) and red (DsRed). (B) Relative amounts of the
lag-2 promoter and the T07F10.1 gene as determined by quantitative PCR. Primer set 1 is targeted at the
lag-2 promoter. Primer set 2 is targeted at the T07F10.1 gene. The data were normalized with the
ama-1 gene. The copy numbers are presented as a ratio to the wild-type N2 (n>3). (C) A scatter plot of the copy number of integrated sequences (abscissa) against fluorescence intensity (ordinate) in the Ex5672, and the 14 Is lines. The X axis is shown in log scale. The graph represents the intensity of fluorescence of DTC (y-axis, n > 20 animals per strain). Fluorescence intensity was measured using ImageJ (NIH, Bethesda, MD). (D) Example of GFP protein expressed in DTC. Scale bar = 5.0 μm. (2 sec. exposure time, gain X 4)