<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0864-0300</journal-id>
<journal-title><![CDATA[Revista Cubana de Investigaciones Biomédicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Invest Bioméd]]></abbrev-journal-title>
<issn>0864-0300</issn>
<publisher>
<publisher-name><![CDATA[ECIMED]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0864-03002019000200296</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Fractalidad en un patrón de cristalización de moco cervical humano obtenido en período periovulatorio]]></article-title>
<article-title xml:lang="en"><![CDATA[Fractality in a pattern of crystallization of human cervical mucus obtained at periovulatory period]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vigil Portales]]></surname>
<given-names><![CDATA[Pilar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cortés Cortés]]></surname>
<given-names><![CDATA[Manuel Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Vicerrectoría de Comunicaciones Pontificia Universidad Católica de Chile ]]></institution>
<addr-line><![CDATA[Santiago ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Reproductive Health Research Institute.  ]]></institution>
<addr-line><![CDATA[Santiago ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Bernardo O&#8217;Higgins Facultad de Salud Programa de Doctorado en Educación, Departamento de Ciencias Químicas y Biológicas]]></institution>
<addr-line><![CDATA[Santiago ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>38</volume>
<numero>2</numero>
<fpage>296</fpage>
<lpage>302</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0864-03002019000200296&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0864-03002019000200296&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0864-03002019000200296&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La secreción cervical cumple una función importante en el proceso reproductivo humano y algunas sus características (e.g., el cristalizar) cambian dependiendo de las variaciones en los niveles de hormonas esteroidales sexuales.  Objetivo:  Reportar la fractalidad observada en un patrón de cristalización de moco cervical humano.  Métodos:  El moco fue obtenido de una paciente en período periovulatorio. La imagen de un patrón cristalino de moco cervical fue transformada a blanco y negro y analizada mediante Fractalyse v. 2.4, el cual determina la dimensión fractal (DF) para cada imagen estudiada. Se analizaron tres zonas para la imagen seleccionada.  Resultados:  Se encontró, para la Zona 1, DF (± desviación estándar) = 1,36 ± 0,02 (r² = 0,9985); para la Zona 2, DF = 1,35 ± 0,02 (r² = 0,9979); y para la Zona 3, DF = 1,36 ± 0,03 (r² = 0,9958). Las DF encontradas para las zonas estudiadas fueron estadísticamente iguales entre sí.  Conclusiones:  El moco cervical humano en período periovulatorio puede seguir un patrón de cristalización tipo fractal, especialmente en lo referente a la semejanza de sus componentes estructurales (criterio de autosimilitud).]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Cervical secretion plays an important role in the human reproductive process and its characteristics (e.g., crystallization) change depending on variations in the levels of sex steroid hormones.  Objective:  The purpose of this brief communication is to report the fractality observed in a crystallization pattern of human cervical mucus.  Methods:  Mucus samples were obtained from a patient in the periovulatory period and an image of the crystalline pattern of cervical mucus was transformed to black and white and analysed by Fractalyse v. 2.4, which determines the fractal dimension (FD) for each studied image. Three zones were analysed for the selected image.  Results: It was found that, for Zone 1, FD (± standard deviation) = 1.36 ± 0.02 (r² = 0.9985); for Zone 2, FD = 1.35 ± 0.02 (r² = 0.9979); and for Zone 3, FD = 1.36 ± 0.03 (r² = 0.9958). Zones studied were statistically equal to each other regarding their FD.  Conclusions:  Human cervical mucus obtained at periovulatory period can follow a fractal-like pattern of crystallization, especially in relation to the similarity of its structural components (criterion of self-similarity).]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[cristalización]]></kwd>
<kwd lng="es"><![CDATA[fractalidad]]></kwd>
<kwd lng="es"><![CDATA[moco cervical humano]]></kwd>
<kwd lng="es"><![CDATA[modelamiento matemático]]></kwd>
<kwd lng="es"><![CDATA[sistemas complejos]]></kwd>
<kwd lng="en"><![CDATA[complex systems]]></kwd>
<kwd lng="en"><![CDATA[crystallization]]></kwd>
<kwd lng="en"><![CDATA[fractality]]></kwd>
<kwd lng="en"><![CDATA[human cervical mucus]]></kwd>
<kwd lng="en"><![CDATA[mathematical modelling]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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