FIG. 2.

c-rel mRNA is expressed in fetal skin. A c-rel cRNA probe was incubated with sections of E18.5 skin. Panels A and C are dark-field images of the corresponding bright-field images in panels B and D. Sense probe controls are shown in panels C and D. Note the c-rel mRNA expression in the epidermis and hair follicles (A). At higher magnification (E and F), silver grains overlay the sheath cells (arrow in panel E) and the dermal papilla (arrowhead in panel E) of hair follicles, plus basal cells (arrow in panel F) and differentiating keratinocytes in the epidermis (bracket in panel E). HF, hair follicle; SC, sheath cells; DP, dermal papilla; BL, basal layer; K, keratinocytes. Bars: 43 μm (A, B, C, and D) and 22 μm (E and F).