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Olfactory cortex layers

Cajal drawing showing the olfactory cortex layers. Legend: (A) Olfactory fibers layer. (B) Plexiform layer. (C) Layer of polymorphic superficial cells. (D) Layer of the pyramids. (E) Deep polymorphous cells. (b) Bifurcation of axons. (Source: Ramón y Cajal S. Estudios sobre la corteza cerebral humana. IV. Estructura de la corteza cerebral olfativa del hombre y mamíferos. Trab Lab Invest Biol 1901;1:1-140. Instituto Cajal, Madrid, Spain. See: Figueres-Oñate M, Gutiérrez Y, López-Mascaraque L. Unraveling Cajal's view of the olfactory system. Front Neuroanat 2014;8:55. Creative Commons Attribution [CC BY] license, creativecommons.org/licenses/by/4.0.)

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