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Mouse anti-Dl is a monoclonal antibody that specifically binds to the Delta protein. The Delta protein is a transmembrane ligand that plays a key role in the Notch signaling pathway, which is important for cell-cell communication and developmental processes. This antibody can be used to detect and study the Delta protein in various experimental systems.

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6 protocols using mouse anti dl

1

Drosophila Ovary Immunohistochemistry

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The following primary antibodies were used: guinea-pig anti-Tj (G5 or GP6, 1:5000) [57 (link)], rat anti-Bab2 (R10, 1:3000; or R7, 1:2000) [20 (link)], rabbit anti-Vasa (1:2000) [80 (link)], rabbit anti-Vasa (d-260, 1:500; Santa Cruz Biotechnology), chicken anti-Vasa (1:5000; gift from K. Howard and M. Van Doren), rabbit anti-α-spectrin (#254, 1:1000; gift from D. Branton), mouse anti-LamC (LC28.26, 1:50), mouse anti-Hts (1B1, 1:5), mouse anti-N (C17.9C6, 1:5; C458.2H, 1:5), mouse anti-Dl (C594.9B, 1:5), mouse anti-Engrailed (4D9, 1:5), and mouse anti-ßPS integrin (CF.6G11, 1:10) (Developmental Studies Hybridoma Bank), rabbit anti-pMad (PS1, 1:250; gift from T. Tabata) [81 (link)], rabbit anti-pMad (pSmad1/5, 41D10, 1:100; Cell Signalling), rabbit anti-ß-galactosidase (1:1500; MP Biomedicals), and rabbit anti-GFP (1:100; BD Biosciences). Secondary antibodies (1:400) were conjugated either to Cy3, Cy5 (Jackson Immuno Research Laboratories), Alexa-405, Alexa-555, Alexa-488, or Alexa-647 (Molecular Probes, Life Technologies). Ovaries were mounted in Vectashield (Vector Laboratories).
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2

Immunolabeling and Proliferation Assay of Drosophila Midgut

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Adult midguts were dissected in PBS and fixed for 30 min at room temperature in 4% (v/v) paraformaldehyde in PEM (0.1 M PIPES, 2 mM EGTA, 1 mM MgSO4). Triton-X and sodium deoxycholate were added to the fixative to a final concentration of 0.1% (w/v). Tissues were washed four times in PBS and incubated overnight at 4°C with primary antibodies, washed again with PBS, and incubated for 2 h with secondary antibodies. Samples were mounted in VectaShield before imaging. The antibodies used were rabbit anti-pAkt-505 (1:100; Cell Signaling), mouse anti-Dl (1:30; Developmental Studies Hybridoma Bank), Alexa 555 anti-mouse, Alexa 647 anti-mouse, and Alexa 488 anti-rabbit IgG. For proliferation assays, midguts were incubated in 5 µM EdU for 30 min immediately after dissection according to the manufacturer’s instructions (Invitrogen). Nuclei were visualized with DAPI.
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3

Drosophila Leg Disc Staining and Quantification

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Larval and prepupal leg discs were fixed and stained following standard procedures. As primary antibodies we used rabbit and mouse anti-βGal, rabbit anti-Dys (a gift from L. Jiang and S.T. Crews), rabbit anti-DCas-3 (cleaved Drosophila Dcp-1, Cell Signaling Technology), rabbit anti-P-Mad (kindly provided by G. Morata). Mouse anti-Dl, anti-Dlg and anti-Tgo are from Developmental Studies Hybridoma Bank, University of Iowa. TRITC-phalloidin and Phalloidin-Atto 647N were used to stain F-actin (Sigma Aldrich), and secondary antibodies were coupled to Red-X, FITC and Cy5 fluorocromes (Alexa Fluor Dyes, Invitrogen).
To determine the levels of cell death in E(spl)-mβ and “fold” domains, we have performed Z-stack imaging of wild type (n = 8 prepupae leg discs) and dys2/dys3 mutants (n = 10 prepupae leg discs) and counted the number of D-Cas3 positive cells on each domain with the aid of the Fiji software. We selected for this analysis the joints between tarsal segments 2/3 and 3/4.
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4

Immunostaining and FISH Protocols

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Immunostaining and FISH protocols were followed as previously described (Kosman et al. 2004 (link)). Sheep antidigoxigenin (Life Technology PA185378), or rabbit anti-FITC (Invitrogen A889), mouse anti-Dl (1:10; Developmental Studies Hybridoma Bank 7A4) or guinea pig anti-Twi (1:200) (Trisnadi and Stathopoulos 2015 (link)) were used together with Alexa conjugate secondaries (1:400; Thermo Fisher). DAPI staining (1:10,000; Molecular Probes) was used to mark nuclei.
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5

Immunofluorescent Staining Protocol

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Immunofluorescent staining was carried out using a standard procedure (König and Shcherbata, 2013 (link)). The following primary antibodies were used: mouse anti-En (1:20), mouse anti-β-Gal (1:20), mouse anti-BrZ1 (1:20), mouse anti-NICD (1:20) and mouse anti-Dl (1:20), all from Developmental Studies Hybridoma Bank; rabbit anti-phosphorylated Mad (pMad, 1:5000; a gift from Ed Laufer, Columbia University, New York, USA), rabbit anti-Vasa (1:5000; a gift from Herbert Jäckle, Max Planck Institute for Biophysical Chemistry, Goettingen, Germany), mouse anti-CD2 (1:100, BioLegend, 100107), guinea pig anti-Traffic Jam (Tj, 1:5000; a gift from D. Godt, University of Toronto, Canada) and chicken anti-GFP (1:5000, Abcam, ab13970). Secondary antibodies were: goat anti-rabbit Alexa 488, goat anti-chicken Alexa 488 and goat anti-guinea pig Alexa 647 (1:500, Life Technologies, A-11034, A-11039, A-21450); goat anti-mouse Cy3 IgG1 and goat anti-mouse IgG2a Alexa 488 (1:250, Jackson ImmunoResearch Laboratory). For visualizing cell nuclei, DAPI dye was used (Sigma). Samples were analyzed using a confocal microscope (Zeiss LSM 700). For making figures, Adobe Photoshop software was used.
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6

Immunofluorescence Antibody Panel

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The following primary antibodies diluted in 1× PBST were used in this study: mouse anti-Dl, mouse anti-Pros, mouse anti-HP1 (Developmental Studies Hybridoma Bank, Iowa City, IA, USA), 1:200; mouse anti-GFP and rabbit anti-GFP (Molecular Probes,), 1:1000; rat anti-GFP (Nacalai Tesque Inc., Kyoto, Japan), 1:1000; rabbit anti-phospho-histone H3 (PH3; Millipore, Billerica, MA, USA), 1:1000; anti-Cleaved caspase-3 (Cell Signaling Technologies, Danvers, MA, USA), 1:1000; rabbit anti-γH2AvD (Rockland, Gilbertsville, PA, USA), 1:2000; mouse anti-γ-tubulin (Sigma-Aldrich), 1:1000; and anti-hVDR antibody (Thermo Fisher Scientific, Cleveland, OH, USA), 1:1000. The following secondary antibodies diluted in 1× PBST were used in this study: goat anti-rabbit FITC; goat anti-rabbit Cy3; goat anti-mouse FITC, goat anti-mouse Cy3, goat anti-rat FITC, and goat anti-rabbit Alexa Fluor® 647 (Jackson ImmunoResearch, West Grove, PA, USA), 1:400.
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