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3 protocols using rabbit anti p mad

1

Visualizing Indirect Flight Muscle Apoptosis

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To observe the individual indirect flight muscles (IFMs), heads and abdomens were removed and the remaining body was fixed in 4% paraformaldehyde (PFA) for 1 h at room temperature (RT) or overnight at 4 °C. Then, the muscular tissue was obtained from the dissected thorax in 0.3% PBST and blocked for 1 h in 0.3% PBST with 10% normal goat serum for 1 h at RT. Primary antibodies were rabbit anti-cleaved caspase 3 (1:200, Cell Signaling Technology, Danvers, MA, USA), rabbit anti-p-mad (a gift from Prof. Peter ten Dijke) and anti-p-smad3 (1:200, Abcam, Cambridge, UK), secondary antibodies conjugated to DyLight 488 or 649 (Jackson Immuno Research, West Grove, PA, USA) were used at 1:200. The muscle fibers were labeled with rhodamine-phalloidin (1:1000, Thermo Fisher Scientific, Bedford, MA, USA) and nuclei were counterstained with DAPI (1 µg/mL; Sigma Aldrich, Saint Louis, MI, USA). The samples were observed with Zeiss LSM880 laser scanning confocal microscopy, with a Plan-Apochromat 63x/1.4 Oil DIC M27 objective.
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2

Larval Tracheal Immunostaining Protocol

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Larval tracheae were dissected at either L2 or L3 larval instar and immunostained according to standard protocols. The following primary antibodies were used: mouse anti-Hdc (1:1), mouse anti-β-galactosidase 40.1a (1:200) from the Hybridoma Bank, rabbit anti-PH3 (Ser) (1:100) from Cell signaling, rabbit anti pMad (1:100) a gift from Gines Morata and goat anti-GFP (1:500) from Abcam. Secondary antibodies labeled with Alexa 488, Alexa 555, or Alexa683 were obtained from Molecular Probes. Micrographs were acquired with Leica SP5 and SPE confocal microscopes and images were processed with FIJI.
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3

Immuno-detection of Drosophila Ovary Markers

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Adult ovaries were dissected, fixed, and stained according to Eliazer et al. (2011) (link), except that ovaries stained for pMAD were fixed for 30 minutes. The images were taken with Zeiss LSM 510 confocal microscope. The following primary antibodies were used: mouse anti-Hts (1B1 from Developmental Studies Hybridoma Bank, dilution at 1:20), rat anti-VASA (Developmental Studies Hybridoma Bank, DSHB, 1:20), mouse anti-Lamin C (LC28.26, DSHB, 1:20), anti-Engrailed (4D9, DSHB, 1:2), mouse anti-Sxl (M114 DSHB, 1:10), rabbit anti-pMAD (Abcam, 1:200) mouse anti-BamC A7 (gift from D. McKearin, 1:20), rabbit anti-Nanos (gift from A. Nakamura, RIKEN, Kobe, Japan), rabbit anti-Spectrin (gift from R. Dubreuil, University of Illinois at Chicago, 1:2,500), mouse anti-β-galactosidase (Promega, 1:1,000), rabbit anti-GFP (Invitrogen, 1:1,000), guinea pig anti-Traffic Jam (gift from D. Godt, University of Toronto, Toronto, ON, Canada, 1:5,000), rat anti-HA (Roche, 3F10). Cy3, Cy5, FITC (Jackson Laboratories) or Alexa 488 (Molecular Probes) fluorescence-conjugated secondary antibodies were used at a 1:200 dilution.
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