Elastic fibers are important constituents of connective tissue and are of importance in the skin in pathologic conditions as well as in the changes due to age which characterize this organ. The substance from which the fibers develop, the manner and the time of their appearance, and the local variations in their distribution are all interesting problems in embryology. I have examined sections of skin from several areas on fetuses from 3 months of age to full term, with particular attention to these problems, and I shall compare my results with those of previous observers. Before attempting to interpret my observations, it will be necessary to review the embryology of the skin as a whole and the development of connective tissues in general.
EMBRYOLOGY OF THE SKIN
Any review of embryology of the skin must depend largely on Pinkus'1a summaries for Keibel and Mall's "Manual of Human
LYNCH FW. ELASTIC TISSUE IN FETAL SKIN. Arch Derm Syphilol. 1934;29(1):57–79. doi:https://doi.org/10.1001/archderm.1934.01460070060006
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