... processing of GPV in CHO and K562 cells c otransfected with GPV and GPIb-IX. (A) CHO cell s stablytransfectedwithGPV,GPIba,GPIbßandGPIXwereanalysedforsurfaceexpression of GPV b y flow cytometry. ... soluble form of GPVThe CHO/GPV cell line transfected with full length GPVlacked surface expression of GPV as m easured by flowcytometry (Fig. 1A), despite selection of a stronglyexpressing clone ... ais du Sang-Alsace, Strasbourg, FranceGlycoprotein (GP) V is noncovalently linked to GPIba,GPIbb and GPIX within the platelet GPIb–V–IX complex,a receptor for von Willebrand factor and thrombin....