The RBC antibody identification test is used to name the specific antibody or antibodies that are present to determine if they are likely to be clinically significant, i.e., if they are likely to cause a transfusion reaction.
Roku features several cable channels like FOX, A&E, History Channel (and dozens more) that offer a combination of free content, plus a full line-up of channel content you can access with your cable subscription credentials.
ROKU will only allow you to stream those premium channels you have a subscription for and in some cases, some cable channels are not available for UVerse users. Slingbox allows you to stream to a computer your live TV (or recorded) programs to anywhere you have an internet connection.