title: Histogenesis of the spleen in the human embryo in O'Rahilly's stages 17 to 23.
abstract: A histological study of the spleen in 30 human embryos in O'Rahilly's stages 17-23 revealed that the splenic anlage is composed of mesenchymal elements. Furthermore, the spleen is formed by a cytoreticulum containing a number of cells similar in appearance to lymphoid elements. No evidence of a celomocapsular separation is seen in this period.
authors.affiliation: Department of Morphological Sciences, University of Granada.
authors.forename: J A
authors.initials: JA
authors.lastname: Merida-Velasco
authors.forename: I
authors.initials: I
authors.lastname: Sanchez-Montesinos
authors.forename: J
authors.initials: J
authors.lastname: Espin-Ferra
authors.forename: J D
authors.initials: JD
authors.lastname: Garcia-Garcia
mesh_terms: D003593:Cytoplasm / Q000502:physiology; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D013154:Spleen / Q000033:anatomy & histology / Q000196:embryology*