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. 2021 Apr 30;41(6):1272–1290. doi: 10.1007/s10875-021-01031-5

Fig. 3.

Fig. 3

Clinical features of IL-21R-deficient patients. a Pedigree of the family of P1, P2, and P3. b, c Cutaneous involvement in P4 (face and arm). d H&E stain of a skin biopsy of P4 showing lymphohistiocytic inflammation. Predominant infiltration of CD3+ cells of the superficial dermis invading underlying subcutaneous tissue