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Fig. 5. No mature luminal cells in Foxa1/
prostate. (A-D) EM analysis on 12-week-old rescued
Foxa1+/+ and Foxa1/ VPs.
Scale bars: 2 µm in A,B; 500 nm in C,D. Asterisks indicate the lumen.
Wild-type cells (A,C) contain secretory materials seen in apical vesicles
(arrow) and at luminal surface (arrowhead). Secretory material was absent in
Foxa1/ cells (B,D). (E) MALDI-MS protein
profiles of m/z range 3000-16,000 obtained from 4-week-old rescued
Foxa1+/+, Foxa1+/ and
Foxa1/ prostates. Continuous profiles were
zoomed in at m/z range 16,100-26,000. Arrows indicate peaks that were absent
in Foxa1/ but present in control prostates.
(F) RT-PCR for Pbsn and Sbp. Bs, basement membrane.