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Figure 1

Figure 1. From: Respiratory symptoms among infants at risk for asthma: association with surfactant protein A haplotypes.

Pairwise linkage disequilibrium measure (r2) for surfactant protein A SNPs (5 SFTPA1 SNPs: aa 19, aa 50, aa 62, aa 133, aa 219; 4 SFTPA2 SNPs: aa 9, aa 91 aa 140, aa 223) from 221 white infants at risk for developing asthma. Gray scale represents strength of association from white (r2 = 0) to black (r2 = 1). (CT and MA, 1998 – 2000)

Melinda M Pettigrew, et al. BMC Med Genet. 2007;8:15-15.

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