Fig. 1. Expression of MCSP in human interfollicular epidermis. (A,B) Frozen sections of human scalp labelled with mAb 9.2.27 to MCSP (green in A; red in B) alone (A) or in combination with an anti-ß1 integrin mAb (green in B). MCSP staining of outermost epidermal layers is non-specific. The pseudo colour image in (A) gives an indication of the level of MCSP fluorescence, ranging from red (highest) to blue (lowest). bl, basal layer of epidermis; Derm, dermis; Epid, epidermis. (C,D) Whole mounts of human breast interfollicular epidermis double labelled for MCSP (green) and ß1 integrins (red in C) or Ki67 (red in D). The MCSP and integrin fluorescence are shown both separately (C, top) and merged (C, bottom).