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Fig. 5. Expression of White in the Drosophila Malpighian tubule. Staining
of White expression in c42/w::eYFP adult tubules by
immunocytochemistry with anti-GFP antibody. Intact tubules from adult progeny
of crosses between c42 and two independently derived UAS-w::eYFP
lines (E5 and H8) were used. (A) Main segment of c42/w::eYFP (UAS
line E5) tubule showing exclusion of staining in stellate cells, yellow
arrows. (B) Main segment of c42/w::eYFP (UAS line H8) showing
exclusion of staining in stellate cells, yellow arrows. (C) Canton S tubules
(high magnification) stained with anti-GFP antibody. Only background
fluorescence is observed. (D) Principal cell in c42/w::eYFP (UAS line
E5) tubule at high magnification showing vesicular staining. Scale bars: A,B
10 µm; C,D 5 µm.