====== 1884 ====== [[1883]]-[[1885]] The first [[bilateral intracranial acute epidural hematoma]] case was described by Roy in [[1884]] ((Roy GC (1884) Fracture of skull; extensive extravasation ofblood on dura mater, producing compression of brain; trepanning; partial relief of symptoms; death. Lancet 2:319)). ---- The [[Frankfurt plane]] or Frankfort plane (both spellings are widely used, and the term is entered as Frankfort horizontal plane in several medical dictionaries, although Frankfurt is the modern standard spelling of the city it is named for) was established at the World Congress on Anthropology in Frankfurt am Main, [[Germany]] in [[1884]], and decreed as the anatomical position of the human [[skull]]. ---- [[Macrophage]]s were first discovered by Élie Metchnikoff, a Russian bacteriologist, in [[1884]].