Figure 2.

Histopathological section of alopecia areata incognita: (A,B) reduced number of terminal anagen follicles, a dilated infundibular ostium with vellus hair and increased number of streamers (hematoxylin). Histopathological section of diffuse alopecia areata: (C) normal number of terminal anagen follicles, slight increase in the number of streamers, an infundibular ostium dilated with cadaverized hair (H&E, eosin, ×4). Horizontal section: an early anagen follicle (H&E, ×8); (D) deep perifollicular lymphocyte infiltrate (H&E, ×8). [Copyright: ©2019 Alessandrini et al.]