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CORRESPONDENCE|
November 1, 1991
A four-base deletion 5' to the A gamma globin gene is a common polymorphism [letter] Free
Blood (1991) 78 (9): 2473–2474.
![First page of A four-base deletion 5' to the A gamma globin gene is a common polymorphism [letter]](https://ash.silverchair-cdn.com/ash/content_public/journal/blood/78/9/10.1182_blood.v78.9.2473.2473/1/2473.pdf.gif?Expires=1763517196&Signature=03Rn835LPCkWNsE0SplB0NXbvEI5ndaDD02r9iHJgBi7DH8wFbR07AWczwVkkycbH8wyi77oc2iUo64A-lpymM4NABLmiDDAcThJHIcVxioWISz2~BozGyXt0GcJ02Vf921mXySe1K8AqZkDFAZV2VbH~YGLTiWI5f3~xO2Yvgf--KsFDqnsD3yNLRbgDDVIx2CgQBMvVVz1wd2ldyLrXPRqUQIBAFyC-OwAtMR9j3tB7c0iKADLpZ4adQiNxU0wI1U1ZWs6DJK5nP2eGCgJXX5js9ecq2Habh7cwaj22j4dst5VUCbQq3vmAXeTWrHlM2aSpQ2Derij15UmIecHkA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
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