Syk is expressed in ovine ruminal mucosa tissue and OREC. A Syk expression in the ovine ruminal mucosa was assessed by immunohistochemistry. Formalin-fixed paraffin-embedded sections of mucosa from the ovine rumen were stained with Syk Rabbit mAb at 1.6 μg/mL. (Bottom panels) Staining of sections from the same blocks with isotype-matched control antibodies served as a negative control. The picture on the right (40×) is an enlarged view of the red frame on the left side (10×). B Syk expression in OREC detected by immunofluorescence. OREC seeded on cover slips were stained with Syk Rabbit mAb at 1.6 μg/mL, followed by staining with donkey anti-rabbit IgG H&L conjugated to Alexa Fluor® 680 secondary antibody (red), and with DAPI (blue). (Bottom panels) Staining with isotype-matched control antibody.