Table 2.

Absence of endogenous surface expression of PR3 on HUVEC as assessed by FACS analysisa

aHUVEC obtained from three different primary cultures were stimulated with medium alone or medium containing TNFα (500 U/ml) for 2 h, and surface expression of PR3 was assessed using two anti-PR3 mAb (WGM2 and 4A5), while 2C7 served as an isotype-matched control. Data are expressed as mean fluorescence intensity (MFI). TNFα, tumor necrosis factor-α. Other abbreviations as in Table 1.