(1)make vascular; "the yolk sac is gradually vascularized"
(2)血管をつくる
(3)become vascular and have vessels that circulate fluids; "The egg yolk vascularized"
(4)維管束のになり体液を循環させる血管を持つ
(1)The egg yolk vascularized
(2)血管新生化された卵黄