Synonyms : His-tRNA Ligase, Histidyl-tRNA Synthetase, Jo-1 Antigen, Antigen, Jo-1, His tRNA Ligase, Histidine tRNA Ligase, Histidyl tRNA Synthetase, Jo 1 Antigen, Ligase, His-tRNA, Ligase, Histidine-tRNA, Synthetase, Histidyl-tRNA