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Immpress hrp anti mouse igg peroxidase polymer detection kit

Manufactured by Vector Laboratories

The ImmPRESS™ HRP Anti-Mouse IgG (Peroxidase) Polymer Detection Kit is a ready-to-use, enzyme-labeled secondary antibody system designed for the detection of mouse primary antibodies in immunohistochemical and other immunoassay procedures. The kit contains a peroxidase-labeled polymer conjugated to anti-mouse IgG antibodies.

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4 protocols using immpress hrp anti mouse igg peroxidase polymer detection kit

1

Immunohistochemical Evaluation of p62 in HNSCC

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HNSCC blocks were retrieved from the Pathology core at Wayne State University and sections were deparaffinized and then hydrated. Microwave heat-induced antigen retrieval was performed using the Antigen Citrus Plus Retrieval Solution (BioGenex, HK081-5K). Non-specific binding sites were blocked with 2.5% normal horse serum in a wet chamber at 4 oC, overnight. p62 (AbCam, ab56416) was diluted 1:2000 in blocking solution then incubated in a wet chamber at 4 oC for 6 h. The ImmPRESS™ HRP Anti-Mouse IgG (Peroxidase) Polymer Detection Kit (Vector Laboratories, MP-7402) and the ImmPACTTM DAB Peroxidase Substrate (Vector Laboratories, SK-4105) were used to develop the signal of stained slides followed by counterstaining with Mayer’s Hematoxylin (Scytek, HMM999). Images were obtained using a Zeiss Axioplan 2 microscope. Scoring was performed by a pathologist using a scale of 0 = no staining, 1 = low, 2 = moderate, 3 = high stain.
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2

Immunohistochemical Analysis of Tissue Samples

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For IHC, 4 μm thick sections were cut from paraffin-embedded blocks and dried onto positively charged microscope slides. Slides were prepared and stained using the ImmPRESS® HRP Anti-Mouse IgG (Peroxidase) Polymer Detection Kit (Vector Laboratories) as previously described [23 (link)].
For analysis, tissue sections were imaged using an EVOS M7000 automated microscope (Thermo Fisher Scientific). Images were de-identified and 50 random fields per section were run through QuPath image analysis software [24 (link)] to quantify positive DAB-stained cells (as a percentage of total cells).
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3

IHC Analysis of CRC Tissue Sections

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IHC analysis was performed for CRC tissue sections as described earlier [20] (link), [21] , [22] (link). Briefly, sections were deparaffinized, rehydrated, antigen-retrieved, and blocked with BLOXALL Endogenous Peroxidase and Alkaline Phosphatase Blocking Solution (Cat. # SP-6000, Vector Laboratories, Burlingame, CA) for 20 minutes to remove traces of endogenous peroxidase. Subsequently, tissue sections were blocked with Normal Horse Serum Blocking Solution (Cat. # S-2012, Vector laboratories, Burlingame, CA) for 1 hour at room temperature and probed with polyclonal anti-P4HA1 antibody for 1 hour at room temperature. After washes with phosphate-buffered saline (PBS) with Tween, tissue sections were incubated for 1 hour with ImmPRESS HRP Anti-Mouse IgG (Peroxidase) Polymer Detection Kit made in horses (Cat. # MP-7401, Vector Laboratories, Burlingame, CA) as a secondary antibody. After incubation, sections were subjected to washing with PBS with Tween and PBS. Further, ImmPACT DAB Peroxidase (HRP) Substrate (Cat. # SK-4105, Vector Laboratories, Burlingame, CA) was used for color development. Slides were counterstained with hematoxylin solution (Cat. # H-3404, Vector laboratories, Burlingame, CA), dehydrated, and mounted with VectaMount permanent mounting medium (Cat. # H-5000, Vector Laboratories, Burlingame, CA).
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4

Immunohistochemical Analysis of Neurological Markers

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Formalin-fixed dorsolateral prefrontal cortex (dlPFC) sections were immunolabeled with antibodies against GPR39 (anti-GPR39, extracellular domain, antibodies online ABIN1048812), CD68 (anti-CD68, abcam ab955), collagen IV (anti-collagen IV, COL-94, ThermoFisher Scientific MA1-22148), NeuN (anti-NeuN, clone A60, Millipore Sigma MAB377), GFAP (anti-GFAP, clone2E8, abcam ab68428) and SMA was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission.
(anti-actin, α-smooth muscle, Sigma A2547). Antigen retrieval was carried out by pretreatment with citrate buffer, pH 6 in a steamer for 30 minutes followed by 3% hydrogen peroxide to reduce endogenous peroxidase activity. For both CD68 and collagen IV ImmPRESS HRP anti-mouse IgG (peroxidase) polymer detection kit was used (Vector, MP-7402) and subsequently the reaction visualized using diaminobenzidine. For GPR39 ImmPRESS-AP anti-rabbit IgG (alkaline phosphatase) polymer detection kit was used (Vector, MP-5401) and subsequently the reaction was visualized by Vector blue alkaline phosphatase (Blue AP) substrate kit (Vector, SK-5300). For negative controls the primary antibody was replaced by species-appropriate serum.
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