Fig. 2 Low-Resolution Typing HLA-DQA1: (Left) DNA microarray illustrating positions of probes for alleles 01, 02, 03, 04/06, and 05 in the HLA-DQA1 gene. On the bottom left is probe nomenclature for the corresponding probe numbers on the DNA microarray. (Right) Samples were tested on the array in a blinded fashion. The spot diameter is 120-130 mm, with 500 mm spacing. Alleles found by DNA chip analysis are displayed by positive probe signals. All photographs were taken with the use of a CCD camera under a UV light source.

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