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“Causes of Male Infertility: A 9-year Prospective Monocentre Study on 1737 Patients with Reduced Total Sperm Counts” (2016), by Margus Punab, Oliv Poolamets, Piia Paju, Vladimir Vihljajev, Kristjan Pomm, Ruth Ladva, Paul Korrovits, and Maris Laan
By: Logan Hunt
| Published: Sep 20, 2024
In December of 2016, Margus Punab and colleagues published “Causes of Male Infertility: A 9-year Prospective Monocentre Study on 1737 Patients with…
Sperm CountSperm NumberSperm TailSpermSperm Motility
Paternal Sperm Telomere Elongation and Its Impact on Offspring Fitness
By: Joanna Yang, Zane Bartlett
| Published: Feb 07, 2017
Telomeres are structures at the ends of DNA strands that get longer in the DNA of sperm cells as males age. That phenomenon is different for most…
TelomereAgingSpermSpermatozoaTelomerase
The Shettles Method of Sex Selection
By: Alysse Blight
| Published: Apr 03, 2019
In the 1960s in the United States Landrum B. Shettles developed the Shettles method, which is a procedure for couples to use prior to and during an…
TechnologySex PreselectionSex PredeterminationFamily PlanningSex Chromosomes
Hartsoeker's Homunculus Sketch from Essai de Dioptrique
By: Cera R. Lawrence
| Published: Aug 14, 2008
This embryology image is a pencil sketch by Nicolaas Hartsoeker, published as part of his 1694 French-language paper entitled Essai de Dioptrique, a…
SpermatozoaSperm
Spermism
By: Cera R. Lawrence
| Published: Aug 13, 2008
Spermism was one of two models of preformationism, a theory of embryo generation prevalent in the late seventeenth through the end of the eighteenth…
SpermatozoaSpermOva