2.4.1.223 expression in Cos-1 cells 2.4.1.223 expression in COS-1 cells, lacking the putative NH2-terminal transmembrane and cytoplasmic domains 2.4.1.223 expression in COS-1 cells, truncated form , lacking the first 58 N-terminal amino acids 2.4.1.223 human lumenal N-glycosylated EXTL3 (EXTL3DELTAN) is cloned, expressed in human embryonic kidney cells