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Clinical Case Study |
Mayo Clinic, Rochester, MN.
aAddress correspondence to this author at: Mayo Clinic, 9–20 Hilton Building, Rochester, MN, 55905. Fax 507-284-0670; e-mail highsmith.w@mayo.edu.
| The first 20% of the full text of this article appears below. |
Snyder and Fantz present an interesting case of
1-antitrypsin (A1AT) deficiency caused by homozygosity for the Z-deficiency allele. Although A1AT deficiency is generally associated with the Z and/or S alleles, other deficiency alleles also occur. The clinical laboratory is faced with the challenge of detecting all clinically relevant alleles in a timely and cost-effective manner. Phenotyping by isoelectric-focusing electrophoresis has been used for many years to identify a wide
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