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Fig. 5 | BMC Veterinary Research

Fig. 5

From: T-cell-lymphoma presented as a solitary subcutaneous mass in the ventral cervical region of an adult llama- diagnostic and treatment

Fig. 5

Characterization of tumor tissue by immunohistochemistry performed on paraffin sections. a Diffuse proliferation of mildly pleomorphic middle sized neoplastic lymphocytes. The predominantly round shaped, occasionally indented, eccentrically located nuclei harbor granular chromatin with no evident nucleoli and exhibit a mild mitotic activity of 42 mitoses per 10 HPF (HE, representative mitotic figures indicated by arrows); (b) The vast majority of neoplastic cells show highly specific cytoplasmic staining for T-cell antigens CD3 (brown). c Only single interspersed cells show a specific signal for the B-cell lineage detected by antigen CD79a (brown). Bar represents 30 µm

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