Extracellular vesicles secreted by Brugia malayi microfilariae modulate the melanization pathway in the mosquito host Scientific Reports Melanosis coli** Melanosis coli is a benign, reversible condition characterized by brown black pigmentation of the colonic mucosa, most often due to chronic use of anthraquinone laxatives. The discoloration is caused Drosophila are hosts to the first described parasitoid wasp of adult flies Nature Extracellular matrix protein N glycosylation mediates immune self tolerance in Drosophila melanogaster PNAS 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,