| Type | MGI:General | Description | in an ex vivo aortic ring assay, heterozygous mutant aortae show enhanced sprouting of vessels relative to wild-type aortae in an in vivo sponge assay, bFGF-treated polyether sponges implanted in mutant mice show a significantly higher number (15% to 20%) of endomucin-stained vessels relative to wild-type controls |