Fig. 2. Salivary glands from RasV12-expressing larvae produce MMP1, release tissue fragments into the hemolymph and express apoptotic markers.Salivary.

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Fig. 2. Salivary glands from RasV12-expressing larvae produce MMP1, release tissue fragments into the hemolymph and express apoptotic markers.Salivary glands (A) from control crosses (Bx-GAL4;+/+: Ctrl) and Ras-expressing larvae (Bx>Ras, labeled RasV12 in the figure) are shown in phase contrast, after nuclear staining (DAPI), in the green channel showing expression of a Viking–GFP fusion protein (Vkg::GFP) and after staining with an MMP1-specific antibody. Salivary glands from RasV12-expressing larvae produce MMP1, release tissue fragments into the hemolymph and express apoptotic markers.Salivary glands (A) from control crosses (Bx-GAL4;+/+: Ctrl) and Ras-expressing larvae (Bx>Ras, labeled RasV12 in the figure) are shown in phase contrast, after nuclear staining (DAPI), in the green channel showing expression of a Viking–GFP fusion protein (Vkg::GFP) and after staining with an MMP1-specific antibody. (B) Tumor tissue in the hemolymph of RasV12-expressing larvae. GFP-positive fragments (such as the one indicated by the arrow) are found in the hemolymph of Bx-GAL4;UAS-GFP.nls/UAS-RasV12 larvae. The border of the larva is outlined with a dashed line. The figure to the right shows the whole larva. (C) Phosphatidylserine (PS) is detected with fluorophor-conjugated Annexin 5 (left) on RasV12-expressing glands (Bx-GAL4>UAS-RasV12) but not in control glands (Bx-GAL4;+/+, the borders of the glands are outlined with a dashed line, note the fat body is positive in both cases). (D) Active caspases stained with FLICA are detected in a RasV12 salivary gland but not in the control. Bright field and epifluorescence image are shown in all cases. Scale bars: 100 µm. Thomas Hauling et al. Biology Open 2014;bio.20146494 © 2014. Published by The Company of Biologists Ltd