change - undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night"

vascularise, vascularize - make vascular; "the yolk sac is gradually vascularized"

alter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"

vascularise, vascularize - become vascular and have vessels that circulate fluids; "The egg yolk vascularized"