Threads with body for all replies

I'm using the REST API to attempt to get a message an all its replies.  This is the closest URLs I've found are:

http://community.com/restapi/vc/threads/id/2540929

http://community.com/restapi/vc/messages/id/2540929/thread

But they only contains the body of the original message, not the replies.  There is a message entry for each reply, but no body.  How can I get similar results that include the body?