Immunofluorescent localization of proMBP and MBP in IL-5 induced UCC. UCC were stimulated for 0 to 24 days with 5 ng/mL IL-5. Panels (a to e) show examples of proMBP immunofluorescence on days 0, 6, 12, 18, and 24, respectively. Panels (f to j) show examples of MBP immunofluorescence on days 0, 6, 12, 18, and 24, respectively. Bar (a and f) = 10 μm; bar (b to e) and (g to j) = 10 μm.