Chapter 4 The Role of Melanization and Cytotoxic ByProducts in the Cellular Immune Responses of Drosophila Against Parasitic Wasps ScienceDirect Encapsulation of self tissue. Melanotic masses arise in Drosophila Download Scientific Diagram Melanocytic Proliferations Clinical Tree Histopathological Findings of a Melanocytic Nevus A melanocytic nevus is a benign proliferation of melanocytes. Under the microscope, typical features include: Nests or clusters of uniform melanocytes located at the dermoepidermal junction, Histopathological Findings of a Melanocytic Nevus A melanocytic nevus is a benign proliferation of melanocytes. Under the microscope, typical features include: Nests or clusters of uniform melanocytes located at the dermoepidermal junction,