(Star Trek: First Contact; TNG: Q Who) The Borg originated in the Delta Quadrant, (Star Trek: First Contact; VOY: Dark Frontier, Dragon's Teeth) where they already existed by 1484. At that time, only a handful of star systems had been assimilated by them and they had many encounters with the Vaadwaur.
Highlights of the DQÂ® system include: 1  1940: First Dairy QueenÂ® store opens in Joliet, Illinois. 2  1949: DQÂ® introduces malts and shakes. 3  1951: Banana splits appear on the menu.
HLA-DQ (DQ) is a cell surface receptor protein found on antigen presenting cells. It is an Î±Î² heterodimer of type MHC Class II. The Î± and Î² chains are encoded by the two loci HLA-DQA1 and HLA-DQB1, respectively, which are adjacent to each other on chromosome 6p 21.3. Both Î±-chain and Î²-chain vary greatly. A person often produces two Î±-chain and two Î²-chain variants and thus 4 isoforms of DQ.