Fig. 3. Worms were fed FITC-Latex microspheres. The photo on the left was taken using white light and U.V. epi-illumination with a filter set for FITC conjugates, the photo on the right was taken using U.V. epi-illumination only. The latex microspheres are localized to the lumen of the gut. No FITC-conjugate is found inside the cells of the gut.

Photos were enhanced using Adobe Photoshop 4.0.1
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