Cells that have particular shapes to do particular jobs

[From: ] [author: ] [Date: 12-05-09] [Hit: ]

I am looking for an eleven letter word, ending in a 'd', to describe the above. It's for a crossword, by the way. Thanks in advance!

might be "specialized"

keywords: that,Cells,jobs,to,do,have,particular,shapes,Cells that have particular shapes to do particular jobs