mcd99Clones expressing mCD99 were harvested either by trypsin or using 10 mM EDTA in Hanks’ balanced salt solution (HBSS). Cells were washed twice in phosphate-bufered saWhen coexpressed, mCD99 formed heterodimers with mCD99L2, as well as homodimers, and the heterodimers were localized more efficiently at the plasma membrane