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Figure 2


Fig. 2. dab-1-null mutants have defects in ecdysis, and display defects in coelomocyte uptake (Cup) and yolk protein endocytosis (Rme). (A) Representative dab-1(hu186) homozygote trapped in unshed cuticle (arrow). (B,C) Adult worms expressing GFP secreted into the pseudocoelom. Images were captured using identical exposure times and camera parameters. GFP accumulates to high levels in the body cavity of dab-1(gk291) homozygotes (B), but is greatly reduced because of uptake by the coelomocytes in dab-1(gk291) homozygotes carrying the dab-1::gfp transgene (C). (D,E) Composite DIC and GFP fluorescence (pseudocoloured green) images showing localisation of YP170::GFP by oocytes in wild-type (D) and dab-1(hu186) (E) hermaphrodites. In the wild type, oocytes accumulate yolk protein (D), whereas in dab-1(hu186) YP170::GFP accumulates in the body cavity (arrows) and is not detectable in oocytes. Asterisks indicate the spermatheca in the two images. Bars, 25 µm (A); 50 µm (B,C); 10 µm (D,E).





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