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. 2019 May 31;10:652. doi: 10.3389/fphys.2019.00652

Figure 5.

Figure 5

(A) Mean (±SEM) MUC5b level in UWMS of younger (18–30 years, n = 31) and older (60+ years, n = 25) participants. (B) Mean (±SEM) MUC5b level in stimulated WMS following mouth rinse of taste or TRP agonist or smelling of menthol in younger (18–30 years, n = 31) and older (60+ years, n = 25) participants (band intensity on a PAS stained SDS-PAGE gel expressed as a ratio of water rinse/unstimulated MUC5b band intensity). (C) Mean (±SEM) MUC7 level in UWMS of younger (18–30 years, n = 31) and older (60+ years, n = 25) participants (*p = <0.05). (D) Mean (±SEM) MUC7 level in stimulated WMS following mouth rinse of taste or TRP agonist or smelling of menthol in younger (18–30 years, n = 31) and older (60+ years, n = 25) participants (calculated as band intensity on a PAS stained SDS-PAGE gel expressed as a ratio of water rinse/unstimulated MUC7 band intensity). (E) Representative image of an SDS-PAGE gel PAS stained for mucin glycoproteins. U, unstimulated; WR, water rinse; Caf, caffeine; MSG, mono sodium glutamate; M, menthol; MO, menthol odor; Caps, capsaicin. Full gel images shown in Supplementary Figures 1, 2.