A combination of genetic and environmental factors can be responsible for triggering RA.
A combination of genetic and environmental factors can be responsible for triggering RA. Inherited genes in the human leukocyte antigen (HLA) major histocompatibility complex (MHC) are of particular importance. Which of the following is most strongly associated with increased disease severity in RA?
Select the SINGLE most appropriate option from the list below. Select ONE option only.
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