<s>[INST] I HAD A HEART BI-PASS TWO YEARS AGO WHEN I WENT FOR MORE SUR LATTER THEY TOLD ME I HAD YTA AND THE BIG E AND THEY CAN T GET ME BLOOD IN THE U.S. THEY SAID I NEED TO STORE AND FREEZ MY BLOD SO I CAN GET IT IF I NEED IT THEY CAN STORE FOR 10 YEARS THE DR CCAN T TELL ME MUCH ABOUT YTA CAN YOU [/INST] Hi,Thanks for asking.Based on your query, my opinion is as follows.1. It is one of the minor blood group. It is called as Yt antigen system or cartwright system.2. If this antibody is present, it can agglutinate majority of other donor cells.3. Yes, you can store it for future purpose and I would advise you to do it.Hope it helps.Any further queries, happy to help again. </s>