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The Procedure for Semen Analysis as described in the World Health Organization's Laboratory Manual for the Examination and Processing of Human Semen (2021)
By: Logan Hunt
| Published: Jul 08, 2024
In 2021, the World Health Organization, or WHO, published the sixth edition of their Laboratory Manual for the Examination and Processing of Human…
Semen AnalysisWorld Health OrganizationWHOOrganization, World HealthSemen Quality
“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
Christopher Polge and Lionel Edward Aston Rowson’s Experiments on the Freezing of Bull Spermatozoa (1950–1952)
By: Bailey Renee
| Published: Dec 19, 2017
In 1952, researchers Christopher Polge and Lionel Edward Aston Rowson, who worked at the Animal Research Center in Cambridge, England, detailed…
GlycerinCryopreservationSpermatozoaMicroorganisms--CryopreservationExperiments
Ericsson Method of Sperm Separation
By: Alysse Blight
| Published: Sep 20, 2019
In 1973, Ronald Ericsson developed the Ericsson method, which is a technique used to separate human male sperm cells by their genetic material.…
TechnologySex ChromosomesGonosomesSpermSpermatozoa
Ernest John Christopher Polge (1926-2006)
By: Bailey Renee
| Published: Jan 30, 2018
Twentieth-century researcher Ernest John Christopher Polge studied the reproductive processes of livestock and determined a method to successfully…
Smith, Audrey U.Parkes, A. S. (Alan Sterling), 1900-1990National Institute for Medical Research (Great Britain)Medical Research Council (Great Britain)Glycerin
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
“Revival of Spermatozoa after Dehydration and Vitrification at Low Temperatures” (1949), by Christopher Polge, Audrey Ursula Smith, and Alan Sterling Parkes
By: Bailey Renee
| Published: Oct 05, 2017
In the 1949 article “Revival of Spermatozoa after Dehydration and Vitrification at Low Temperatures,” researchers Christopher Polge, Audrey Ursula…
LiteratureMedical Research Council (Great Britain)GlycerinCryopreservationSpermatozoa
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
Sperm Capacitation - Image
By: Katherine Koczwara
| Published: Sep 23, 2019
The male body, followed by male reproductive organs from which the sperm originates, is depicted from top to bottom at the left.
SpermatozoaSpermSperm Capacitation
No-scalpel Vasectomy
By: Cole Nichols
| Published: Jul 04, 2022
No-scalpel vasectomy, or NSV or keyhole vasectomy, is a surgical method of sterilization that involves puncturing the skin of the scrotum to access…
TechnologySterilizationVasectomyMale SterilizationFamily Planning