Figure 3 Upper left: microvasculature in diffuse large B cell lymphoma—overview (×40). Upper right: microvasculature in mantle cell lymphoma (×40). Middle left: microvasculature in follicular lymphoma (×40); note the higher perifollicular than follicular microvessel density (MVD). Middle right: microvasculature in small lymphocytic lymphoma (×40). Lower: MVD on conventional tissue slides from follicular lymphoma grade 2 (left) and grade 3 (right, ×40); note the higher perifollicular MVD in follicular lymphoma grade 3 (right).