DNA microarray assay.

<lI> DNA  for  5 genes are amplified by PCR, denatured, and tagged with
fluorescent dyes.
<lI> The  DNA  is  pumped  into  a microarray (DNA chip) containing ASO
probes for 9 alleles.
<lI> The hybridization is analyzed by laser and computer software
<lI> The color patterns show the patient's genotype.