Expression of concern 'Effect of high environmental temperature on semen parameters among fertile men' [Fertil Steril 2010; 93:1884-86]
Related Experiment Video
Updated: Jul 1, 2026
07:57
Fish Sperm Assessment Using Software and Cooling Devices
Published on: July 28, 2018
9.2K
M Nabil Momen1, Fredrick B Ananian1, Ibrahim M Fahmy1
1Faculty of Medicine, Cairo University, Cairo, Egypt.
Fertility and Sterility
|October 6, 2025
Abstract
No abstract available in PubMed .
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Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male reproductive...
02:11Effects of Temperature on Free Energy
The spontaneity of a process depends upon the temperature of the system. Phase transitions, for example, will proceed spontaneously in one direction or the other depending upon the temperature of the substance in question. Likewise, some chemical reactions can also exhibit temperature-dependent spontaneities. To illustrate this concept, the equation relating free energy change to the enthalpy and entropy changes for the process is considered:
02:27Background and Environment Affect Phenotype
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
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01:25Increased Body Temperature
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