Number of circulating maternal T cells and age at study in 48 patients with SCID.

Patients were classified into 3 groups differing in their manifestation of skin GVHD: group 1 had no manifestation; group 2 presented with chronic eczema; and group 3 presented with severe exfoliative erythrodermia. ● indicates group 1; ▪, group 2; and ▴, group 3.