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Olfactory bulb section from a several-day-old cat

Cajal drawing of an olfactory bulb section from a several-day-old cat. Legend: (A) Glomerular layer. (B) Outer plexiform layer. (C) Mitral cell layer. (D) Inner plexiform layer. (D) Grains layer. (E) White matter. (a) Terminal arborization of an olfactory fiber. (b) Glomerulus with several endings. (c) Mitral plume. (d) Tufted cells. (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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