Results 31 to 40 of about 359,825 (361)

Comparative expression profiling of testis-enriched genes regulated during the development of spermatogonial cells. [PDF]

open access: yesPLoS ONE, 2017
The testis has been identified as the organ in which a large number of tissue-enriched genes are present. However, a large portion of transcripts related to each stage or cell type in the testis still remains unknown.
Jinsoo Ahn   +12 more
doaj   +1 more source

Evidence for directional testes asymmetry in Hyla gongshanensis jindongensis

open access: yesActa Herpetologica, 2017
The compensation hypothesis predicts that one testis may grow more for compensating for a reduced function in the other testis, thus exhibiting a directional asymmetry in testis size. In this study, we tested the prediction of the compensation hypothesis
Qing Gui Wu, Wen Bo Liao
doaj   +1 more source

An update on the potential for male contraception : emerging options [PDF]

open access: yes, 2013
The human population continues to grow and is estimated to rise to 10.1 billion by the end of the century. Therefore, there is still an unmet need for safe and highly effective contraceptive options for both men and women.
Alsaadi, Manal   +5 more
core   +1 more source

Developmental changes in the histological structure of the testes, and testosterone profiles in male guinea fowls (Numida meleagris) [PDF]

open access: yes, 2017
Owing to the paucity of information on the reproductive biology of guinea fowls, a study involving a total of 66 males was conducted, and documented the developmental changes in histological structure of the testes of guinea cocks from hatching until ...
Abdul-Rahman, Iddriss I.   +2 more
core   +1 more source

Norduz Erkek Kuzularında Testis Özellikleri ve Serum Testosteron Konsantrasyonun Yaşa Göre Değişimi1

open access: yesJournal of Agricultural Sciences, 2006
Bu çalışma, Akkaraman varyetesi olarak kabul edilen Norduz erkek kuzularında testis özelliklerinden testis çapı, testis uzunluğu, skrotum çevresi, skrotum uzunluğu, skrotum çevresi/canlı ağırlık oranı, testis hacmi, çift testis ağırlığı, çift epididimis ...
Ayhan Yılmaz
doaj   +1 more source

Absent Blood Flow in the Testis on Color Doppler Ultrasound: The Causes, Differential Diagnosis and Clinical Value [PDF]

open access: yesAdvanced Ultrasound in Diagnosis and Therapy, 2020
Objectives: To investigate the causes, differential diagnosis, and clinical significance of absent blood flow (ABF) in the testis detected by color Doppler ultrasound (CDU) in acute scrotum.Methods: A total of 263 patients with ABF in the testis detected
Shun-Ping Chen, MD, Bin Chen, MD
doaj   +1 more source

Gestational and lactational exposure of rats to xenoestrogens results in reduced testicular size and sperm production [PDF]

open access: yes, 1995
EHP is a publication of the U.S. government. Publication of EHP lies in the public domain and is therefore without copyright. Research articles from EHP may be used freely; however, articles from the News section of EHP may contain photographs or ...
Albro P   +8 more
core   +2 more sources

Testes asymmetry, condition and sexual selection in birds: an experimental test [PDF]

open access: yes, 1998
The functional significance of the marked directional asymmetry in testes size observed in many bird species is obscure. Møller suggested that (i) the smaller of the two testes serves a compensatory role and increases in size (and hence reduces ...
Birkhead, T.R.   +2 more
core   +2 more sources

Primate Primordial Germ Cells Acquire Transplantation Potential by Carnegie Stage 23. [PDF]

open access: yes, 2017
Primordial germ cells (PGCs) are the earliest embryonic progenitors in the germline. Correct formation of PGCs is critical to reproductive health as an adult.
Chen, Di   +7 more
core   +2 more sources

Occurrence of testicular microlithiasis in androgen insensitive hypogonadal mice [PDF]

open access: yes, 2009
<b>Background</b>: Testicular microliths are calcifications found within the seminiferous tubules. In humans, testicular microlithiasis (TM) has an unknown etiology but may be significantly associated with testicular germ cell tumors ...
AC Peterson   +24 more
core   +2 more sources

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