Figure 7

LCN6 protein in human efferent ducts and caput. Panels A and B human efferent ducts from an 83 yr old donor. A, LCN6 protein appears brown, distinct from the toluidine blue counterstain. B, A control staining for which antibody was preincubated with 1 mg/ml recombinant human LCN6 protein. Panels C and D human caput. C, LCN6 appears brown. D, Antibody preincubated with 100 μg/ml human LCN6. Photographs were taken using a 20× objective.