title: A biometric study of Onchocerca volvulus microfilariae from Nigeria using the nuclear counting method.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure; D006166:Guatemala; D006801:Humans; D008842:Microfilariae / Q000145:classification / Q000648:ultrastructure; D009549:Nigeria; D009854:Onchocerca / Q000145:classification* / Q000648:ultrastructure; D009855:Onchocerciasis / Q000469:parasitology*; D014687:Venezuela