Research Article

Human Brain Microvascular Endothelial Cells and Umbilical Vein Endothelial Cells Differentially Facilitate Leukocyte Recruitment and Utilize Chemokines for T Cell Migration

Figure 1

Confluent THBMEC cultures possess intercellular TJs while HUVECs do not. Three different passages of THBMECs and HUVECs were cultured to confluence. Endothelial cells were stained with rabbit anti-human ZO-1 and occludin antibodies followed by FITC conjugated goat anti-rabbit IgG. Digital pictures were taken following visualization with a Leica Aristoplan laser scanning confocal microscope. THBMEC cultures exhibited continuous ZO-1 and occludin expression at sites of intercellular contact. In contrast, HUVEC cultures showed punctate ZO-1 staining and no occludin immunoreactivity. Scale bar 10 μm.
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