Sequence for an N-terminal HA tag was inserted using CRISPR/Cas9 technology with a crRNA (targeting GATACCTTCGCTCAGCATGG), tracrRNA and an ssODN template (CCGGGTTAACTCCGCCGGAAGTAGTGATTGCTAGCGGGGGGGATACCTTCGCTCAGCATGTACCCATACGATGTTCCAGATTACGCTCTCTGGCGGCGATTCCCCCAGACACCTGGCAGCCGCCCAACGTCTACCTGGAGACTAGGTGAG). (J:300487)