growth factors
Brain angiogenesis is a tightly controlled process that is regulated by       neuroectodermal derived growth factors that bind to tyrosine kinase receptors       expressed on endothelial cells.
Brain  @OBJECT$  is a tightly controlled process that is  @PREDICAT$  by       neuroectodermal derived  @SUBJECT$  that bind to tyrosine kinase receptors       expressed on endothelial cells.