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Time: 2024-03-28T22:41:26Z
URL: http://scholar.google.com/scholar_lookup?title=Dll4+signalling+through+Notch1+regulates+formation+of+tip+cells+during+angiogenesis&year=2007&author=Hellstr%C3%B6m&journal=Nature&volume=445&issue=7129&pages=776-780&doi=10.1038%2Fnature05571&pmid=17259973