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The Blood Type Diet Archives Volume 4
Four subsets of type A?
Posted By: CarolH
Date: May-07, 1998 at 09:47:55
My husband ordered and used a blood typing test kit from ER4YT. The brochure differentiates between A1, A2, A3, and A2B blood. I understand about AA blood and AO blood, but can anyone explain what the other two types are?