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Follicular Lymphoma--High Power The magnification of the following images may vary from image to image. Focus on the relative mixture of cells with small, dense nuclei and larger, open nuclei. Grade 1: The small cleaved cells are slightly larger than a small lymphocyte and have slightly less clumped chromatin and inconspicuous nuclei. A large cleaved cell is just below center. Grade 2: Here there are more large cells with open chromatin than in the picture above. Grade 3: The large cells predominate here. They may be cleaved or non-cleaved (oval). The large non-cleaved cells are sometimes called centroblasts and typically have several nucleoli adherent to the nuclear membrane. Immunoblasts, on the other hand, typically have one, large, central nucleolus. Table of Contents