To anyone who is interested in tissue array for ihc or anything else, I am 
posting this because of Donna who asked in reference to it.  I have recently 
decided to play with this concept myself and have discovered that  Zymed has 
an animal tissue array block pre-prepared and will prepare one of my tissue 
if i send them the ones I want included. Zymed's number is 1-800-874-4494. 
Good luck Donna and et al.
                                                         dana