en 23926499 <p>Sperm cells are one of the most stellar and fas-cinating cells in all species. One of the most distinctive characteristic of these cells is their movement dynamics which can be observed through a light microscope. The first paper regarding sperm cell biology that appeared on PubMed was pres-ented by Dr. W.F. Whitney (1). There, he showed the staining properties of spermatozoa and it was published in the Boston Society of Medical Sciences Journal in 1897. From that time on, around 82,998 papers have been published about sperm. The objective of the present paper was to evaluate the dynamic of sperm publication in the world using PubMed indexing database between 1897 and 2010 and the percentage of papers published on sperm per year.</p> 43 44 https://www.jri.ir/article/458 https://www.jri.ir/documents/fullpaper/en/458.pdf MayaWalter CardonaGrupo Reproducción, Universidad de Antioquia, Medellín, Colombiaماياوالتر كاردوناwdcmaya@medicina.udea.edu.co908