In the article by T. L. Frandsen et al., entitled “Direct Evidence of the Importance of Stromal Urokinase Plasminogen Activator (uPA) in the Growth of an Experimental Human Breast Cancer Using a Combined uPA Gene-Disrupted and Immunodeficient Xenograft Model,” which appeared in the January 15, 2001 issue of Cancer Research (pp. 532–537), the equation on page 534 appeared incorrectly as:
\[L_{v}(\mathrm{vasc/tumor})\ {=}\ \frac{Q_{\mathrm{A}}(\mathrm{vasc})}{{\{}2\ {\cdot}\ 2\ {\cdot}\ {\sum}P(\mathrm{tumor}){\}}}\]
The correct equation appears below.
\[\mathrm{L_{V}}(\mathrm{vasc/tumor})\ {=}\ 2\ {\cdot}\ \mathrm{Q_{A}}(\mathrm{vasc})/{[}(\mathrm{a/p})\ {\cdot}\ {\sum}\mathrm{P}(\mathrm{tumor}){]}\]
Thomas Leth Frandsen
Claus Holst-Hansen
Boye Schnack Nielsen
Ib Jarle Christensen
Jens R. Nyengaard
Peter Carmeliet
Nils Brünner
©2002 American Association for Cancer Research.
2002