How to delete all the vertices associated with a particular material

I have a complicated set of meshes representing human organs. (sorry for those who are squeamish)

I want to isolate each organ and delete the others. Since each organ has a particular material applied it seems like I should be able to select the vertices by material and delete them.

BTW - there are no existing vertex groups for each individual organ.



Option 1
Select the material and in edit mode use the ‘Select’ button to select all the faces with that material.

Option 2
If each organ is a separate mesh ,select one vertex and press Ctrl+L to select any linked vertices

So simple! I knew there had to be a way to do it.

Thanks mucho!