Results 71 to 80 of about 128,725 (200)

Environmental Organochlorines and Semen Quality: Results of a Pilot Study [PDF]

open access: yes, 2012
There have been numerous studies that suggest that sperm concentrations (sperm counts) are declining in men. However, other studies suggest that sperm counts are not declining or may be increasing in some areas.
Altshul, Larisa M.   +6 more
core   +1 more source

Spermatogenesis and sperm structure in the black-striped pipefish Syngnathus abaster (Teleostei, Syngnathidae) = Spermatogenesi e struttura degli spermatozoi in Syngnathus abaster (Teleostei, Synghathidae) [PDF]

open access: yes, 2010
The gonads of adult males of the black-striped pipejish Syngnathus abaster were observed during the reproductive season to describe mature sperm both quantitativel/y and qualitatively.
Addis, Alberto   +3 more
core  

Effect of age on semen parameters in infertile men after varicocelectomy

open access: yesTherapeutics and Clinical Risk Management, 2011
Kamaleddin Hassanzadeh-Nokashty1, Parisa Yavarikia2, Alireza Ghaffari3, Samad Hazhir1, Mohammadali Hassanzadeh11Department of Urology, 2Faculty of Nursery and Midwifery, 3Department of Internal Medicine, Tabriz University of Medical Sciences, Tabriz ...
Hassanzadeh-Nokashty K   +4 more
doaj  

THE EFFECTS OF NICOTINE EXPOSURE PER INHALATION TO THE CHANGE OF MOTILITY AND MORPHOLOGY OF THE RAT’S SPERM

open access: yesJurnal Urologi Indonesia, 2019
Objective: Smoking are known to have detrimental effect on sperm. The effects are suspiciously come from nicotine as its main pharmacologic component. This study is carried out to analyze the effect of nicotine exposure per inhalation to the difference ...
Puruhito Eko Nugroho   +2 more
doaj   +1 more source

Postcopulatory sexual selection [PDF]

open access: yes, 2002
The female reproductive tract is where competition between the sperm of different males takes place, aided and abetted by the female herself. Intense postcopulatory sexual selection fosters inter-sexual conflict and drives rapid evolutionary change to ...
A Civetta   +132 more
core   +1 more source

The Comparison of HA Binding and Zeta Methods Efficiency in Selection of Sperm with Normal Morphology and Intact Chromatin

open access: yesمجله دانشکده پزشکی اصفهان, 2009
Background: Sperm selection for ICSI is based on morphology and motility, but these parameters may not relevant chromatin integrity. One of the sperm selection methods for ICSI is based on sperm functional characteristics.
Mohammad Reza Deemeh   +5 more
doaj  

Effect of Dates (Phoenix Dactilyfera L) on Male Infertility

open access: yesAlthea Medical Journal, 2015
Background: Infertility can be caused by prolonged use of paracetamol that leads to a decrease in the sperm concentration, motility, and morphology.
Semalina Wahyudi   +2 more
doaj   +1 more source

Chromatin packaging and morphology in ejaculated human spermatozoa: evidence of hidden anomalies in normal spermatozoa [PDF]

open access: yes, 2017
This study aimed to investigate the association between anomalies in sperm chromatin packaging, morphology and fertilization in patients undergoing routine in-vitro fertilization (IVF) or subzonal insemination (SUZI).
Bianchi, Patrizia Grace   +4 more
core  

RNA from a simple-tandem repeat is required for sperm maturation and male fertility in Drosophila melanogaster. [PDF]

open access: yes, 2019
Tandemly-repeated DNAs, or satellites, are enriched in heterochromatic regions of eukaryotic genomes and contribute to nuclear structure and function. Some satellites are transcribed, but we lack direct evidence that specific satellite RNAs are required ...
Allshire   +44 more
core   +2 more sources

Morfologi Dan Biometri Spermatozoa Anoa (Bubalus SP.) Yang Diwarnai Dengan Pewarna William's Dan Eosin-Nigrosin [PDF]

open access: yes, 2010
Anoa is Indonesia endemic fauna that included into Appendix I by CITES. Anoa breeding efforts have not succeed, due to their agressivity, soliter, wildness and monogamous.
Aditya, A. (Aditya)   +9 more
core  

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