two types of cells can be recognized on the luminal side of the glomerular basement membrane : the superficial endothelial cells which directly line the lumen and are comparable to endothelia lining the capillaries of other tissues , and the deep cells , ordinarily not in contact with the lumen , which are distinguished by their long cytoplasmic arms extending for some distance in several directions along the capillary wall , numerous spinous processes , and occasional intraluminal pseudopodia .
C0007634
cells
C0010834
cytoplasmic