english: But what we now know, is that for a number of diseases, there are defects in the system, where the body can't prune back extra blood vessels, or can't grow enough new ones in the right place at the right time.
non_english: Ali sada znamo da, kod nekih bolesti, postoje greške u sistemu, kada telo ne može da smanji višak krvnih sudova ili ne može da proizvede nove u pravo vreme na pravom mestu.