FIG. 5.

Donor-to-donor variability in the protein pattern of nasal secretions. (A) AU-PAGE of eight donor’s nasal secretions shows variations in lactoferrin, albumin, β-microseminoprotein (beta-MSP), SLPI, lysozyme, and statherin concentrations. (B) Reducing Tricine-SDS-PAGE of eight donors’ nasal secretions shows the variability in low-molecular-weight proteins. Superscripts indicate three donor groupings based on protein band similarities. The positions of identified components of nasal secretions are shown at the gel margins.