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Rat anti mouse cd8 clone kt15

Manufactured by Bio-Rad

The Rat-anti-mouse CD8 (clone KT15) antibody is a laboratory reagent used to detect the presence of CD8 marker on mouse cells. It is a rat monoclonal antibody that binds specifically to the CD8 antigen expressed on the surface of certain T cells and other immune cells in mice.

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2 protocols using rat anti mouse cd8 clone kt15

1

Immunohistochemistry Analysis of Colon Tumors

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Immunohistochemistry was performed on colon tumors from the AOM model as previously described (20 (link)). Briefly, the fixed sections cut from frozen blocks were blocked with 10% goat serum (Vector Labs) for 1 hour at room temperature then incubated overnight with rat-anti-mouse CD8 (clone KT15; 1:100; AbD Serotec) or rat-anti-mouse CD4 (clone 4SM95; 5 µg/ml; eBioscience). After extensive washing, the slides were incubated with Alexa Fluor 488 goat-anti-rat (Abcam; 1:500) for 1 hour at room temperature. Cover slips were mounted with Prolong Gold antifade with DAPI (Life technologies). Positive cells and DAPI stained nuclei were counted in three random high-powered fields per slide and expressed as a mean percent of positive stained cells of total cell counted.
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2

Quantifying Tumor-Infiltrating CD8+ T-Cells

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To evaluate tumor infiltrating CD8+ T-cells, tumors were frozen in Tissue-Tek OCT and stored at −80°C. Frozen tumors were stained with rat anti-mouse CD8 (clone KT15; AbD Serotec, Raleigh, NC) using previously described methods (12 (link)). CD8+ positive cells and DAPI stained nuclei were counted with a fluorescent microscope (Zeiss LSM 510 META, Carl Zeiss Microimaging Inc., Thornwood, NY). Five to 10 random microscopic fields per mouse were counted and the mean of positive cells per mouse obtained. The data were expressed as the mean number (± SEM) of positive cells per field, or % of positive cells over the total number of nuclei in the field for 5 mice/group.
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