possible explanation for (sometimes) lack of expected results with avastin
 

I know Judah Folkman thought that there were many angiogenic substances and thought that it would be necessary to block several simultaneously--this may be another explanation, leading to another conclusion

http://www.eurekalert.org/pub_releas...-psc021808.php

Here is the whole article:
http://www.plosone.org/article/info%...l.pone.0001652