| http://www.w3.org/ns/prov#value | - To date, no studies have been performed in Latin America to evaluate whether the ???174G/C and ???572G/C IL-6 polymorphisms are associated with RA. Therefore, we decided to investigate genotype and allele frequencies of these two polymorphisms in Mexican mestizo patients with RA and to compare these frequencies with those observed in controls of similar ethnic origin.2.
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