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Fig. 9. Surface distribution in MDCK cells of GFP reporter constructs bearing the
tails of syntaxin 3 or 4. MDCK cells were transiently transfected with
GFP-Syn3 (A-C) or GFP-Syn4 (D-F) and then allowed to form polarised monolayers
on filters. After fixation, the cells were immunostained for E-cadherin, using
Cy3-conjugated secondary antibodies, and analysed by confocal microscopy. A
vertical section for each construct is shown: (A and B), GFP fluorescence, (B
and E), cadherin, (C and F) merged image of (A + B) and (D + E). GFP-Syn4 has
a more pronounced basolateral distribution than GFP-Syn3. Bar, 10 µm.