Fig 6. Fyn and Src target to the apical membrane surface during EC lumen formation.
(A) ECs were allowed to form lumens and after 24 hr, were immunostained with antibodies specific for Src, Yes or Fyn. ECs were counterstained with phalloidin to label F-actin and Hoescht to label nuclei. Arrowheads indicate apical staining of Fyn or Src while arrowheads indicate the basal staining of F-actin. (B) ECs with lumens were immunostained with the indicated phospho-antibodies. Arrowheads indicate apical staining of phospho-Src (Y416) and phospho-c-Raf (Y314). L indicates an EC luminal space. Bar equals 25 μm.