The expression of hG-CSFR on platelets of the Tg mice (the unshaded areas represent isotype control, the shaded areas represent specific staining). (A) Platelets gated in R1 of the Tg mice were stained with 1C2, an anti-mouse platelet antibody. The same finding was obtained with platelets of normal littermates. (B) PE-conjugated hG-CSF bound to platelets of the Tg mice, but not littermates.