This 2005 scanning electron micrograph (SEM) depicted the morphologic characteristics of the inner surface of an unidentified bird's eggshell. In this view the details revealed included the surfaces of the mammillary cones, and a number of intermammillary pores, i.e., canals that span the distance between the shell's outer cuticle layer, and the interior membranous layers. It is through these pores that the diffusion of gasses takes place. It has been found that the distribution of these pores is directly related to the strength and durability, and the respiratory efficiency of the shell structure on a regional basis. This shell fragment was retrieved from the grounds of the Decatur, Georgia suburbs; Magnified 1227x.
CDC/ Janice Carr; Sandra L. Westmoreland, Ph.D.,The University of Texas at Arlington
December 4, 2012
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