Previous Article Next Article Table of Contents Science, Vol.268, No.5209, 448-448, 1995 DOI10.1126/science.268.5209.448 Export Citation Variability Among Human Umbilical Vein Endothelial Cultures - Reply Koch AE, Polverini PJ, Kunkel SL, Harlow LA, Dipietro LA, Elner VM, Elner SG, Strieter RM Please enable JavaScript to view the comments powered by Disqus.