title: [Connections between bone marrow and mesenchyme of the middle ear].
abstract: OBJECTIVE
  To investigate the presence of connections between the bone marrow of the ossicles and the mesenchyme that fills the future tympanic cavity.
  
  
  METHODS
  Ninety temporal bones from embryos and foetuses were examined, selecting 15 aged between 20th to 30th weeks of development, to show connections between ossicle marrow and mesenchyme.
  
  
  RESULTS
  The connections are transitory and appear in the malleus and the incus between 20th to 24th weeks of development, while in the stapes appear later, being between 24th to 28th weeks.
  
  
  CONCLUSIONS
  These connections may have an important role in the phagocytosis of the mesenchymal remains and join in the detritus elimination mechanisms produced during the regression.
authors: Departamento de Anatomía e Histología Humanas, Universidad de Zaragoza, Zaragoza, España. jwhyte@unizar.es
authors: Jaime Rafael
authors: JR
authors: Whyte Orozco
authors: Ana Isabel
authors: AI
authors: Cisneros Gimeno
authors: Raúl
authors: R
authors: Pérez Sanz
authors: Carmen
authors: C
authors: Yus Gotor
authors: José Francisco
authors: JF
authors: Gañet Solé
authors: Marco Antonio
authors: MA
authors: Sarrat Torres
mesh_terms: D001853:Bone Marrow / Q000033:anatomy & histology / Q000196:embryology*; D004429:Ear Ossicles / Q000033:anatomy & histology / Q000196:embryology*; D004432:Ear, Middle / Q000033:anatomy & histology / Q000196:embryology*; D005865:Gestational Age; D006801:Humans; D008648:Mesoderm