section through an onchocercoma, a skin nodule in which adult Onchocerca volvulis lives.  The four somewhat spherical bodies are sections through a coiled worm.  The tiny blue entities inside the worm sections are microfilaria within the uterus.  40x
 

enlarge view of a section of an adult Onchocerca volvulis within a skin nodule, an onchocercoma.  The tiny blue spindles are sections through microfilaria.  The vector is the blackfly, Simulium damnosum.  100x