Aim: This study was carried out to determine the localization of the asid phosphatase (ACP-ase)-positive lymphocytes in hemal nodes of Turkish Merino ram.

Materials and Methods: For this purpose, tissue samples from hemal nodes of six 2-year-old-aged Turkish Merino rams were used. In frozen sections, ACP-ase was demonstrated.

Results: The results showed that ACP-ase-positive lymphocytes localized especially in the germinal centers of the secondary lymphatic nodules. A few ACP-ase-positive lymphocytes were observed in primary follicles, interfollicular area and lymphatic cords.

Conclusion: It was concluded that the further experimental studies should be performed on hemal nodes of ruminants.