Y-P30 and dermcidin immunoreactivity is present on human fingerprints. (A + B) Human fingerprints on BA85 nitrocellulose were stained 2 days after sampling with antibodies against DCD and Y-P30 in A and B, respectively. Immunoreactive material concentrates at the pores of sweat glands aligned in epidermal ridges. C, fingerprint stained under ommision of the primary antibody against Y-P30. Scale bars = 1 mm.