Sequence for three FLAG tags and an HA tag was inserted in-frame into the 3' UTR in exon 9, followed by p2A self-cleaving sequence and the GFP fluorescent marker gene, using CRISPR/Cas9 technology with gRNAs GCCTCAGGTCACATTATCGG(tgg) and TGCAATCAGTTCCGACTCTC(tgg). A neomycin resistance gene cassette was inserted downstream of the gene. (J:290712)