FIG. 1.

Classification of samples based on the degree of thyroid infiltration. (A) From left to right, representative thyroid sections for samples corresponding to the NIT, SFIT, and ELIT categories as obtained from the GTEx repository. SFIT samples revealed the presence of small infiltrates and ELIT glands had large areas of lymphocytic infiltration that in some cases contained organized germinal centers. (B) Sex distribution of donors for each of the three categories. Extensive lymphocyte infiltration is significantly more common in women. ELIT, extensive lymphoid infiltrated thyroid; GTEx, genotype-tissue expression; NIT, not infiltrated thyroid; SFIT, small focal infiltrated thyroid.