Según publica hoy el Diario El País, un estudio realizado por el ministerio de Sanidad estadounidense ha demostrado que las amígdalas son una vía de entrada del VIH al practicar el sexo oral. Un cuarto de siglo han tardado los científicos en descubrir como se transmitía el VIH por vía oral, más allá del contagio por heridas en las encías, algo que queda en entredicho, ya que las encías están recubiertas de unas moléculas llamadas queratinas que actúan como barrera.
El misterio del contagio ha quedado al descubierto al encontrar los científicos una molécula en las células de las amígdalas, el CXCR4, un receptor que sirve para que se una el virús a una de las células que van a infectar y transmita su material genético.
Tras el descubrimiento, numerosos ciéntíficos y médicos han vuelto a recordar que el preservativo debe utilizarse no solo en las relaciones sexuales con penetración, sino también en el sexo oral.
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