Results 11 to 20 of about 217,852 (306)

The Significance of the Contralateral Testis Size Measurement with Ultrasonography in Predicting Monorchism in Boys with Nonpalpable Testicles

open access: yesJournal of Urological Surgery, 2017
Objective: The aim of this study was to determine the significance of contralateral testis size in predicting monorchism in pediatric patients with unilateral undescended testis.
Çağrı Akın Şekerci   +7 more
doaj   +2 more sources

Differentiation of adult-type Leydig cells occurs in gonadotrophin-deficient mice [PDF]

open access: yes, 2003
During mammalian testis development distinct generations of fetal and adult Leydig cells arise. Luteinising hormone (LH) is required for normal adult Leydig cell function and for the establishment of normal adult Leydig cell number but its role in the ...
Baker, P.J.   +4 more
core   +9 more sources

Testis-specific and testis-biased genes do not confound the inference of pre-meiotic dosage compensation in Fig 2.

open access: yes, 2021
This is the same analysis as Fig 2, with testis-specific genes removed. The overall patterns of pre-meiotic dosage compensation and meiotic X downregulation are preserved, indicating that these genes did not influence our main findings.
Zhantao Shao (11285947)   +4 more
core   +1 more source

Testosterone and androstenedione concentrations in human testis and epididymis during the first two years of life [PDF]

open access: yes, 1983
Testosterone and androstenedione were measured in testicular and epididymal tissue of 37 previously healthy infants between 1 and 24 months of age who died suddenly. In half of the patients elevated plasma levels of cortisol and androstenedione suggested
Eisenmenger, Wolfgang   +4 more
core   +1 more source

Identification of novel Y chromosome encoded transcripts by testis transcriptome analysis of mice with deletions of the Y chromosome long arm. [PDF]

open access: yes, 2005
BACKGROUND The male-specific region of the mouse Y chromosome long arm (MSYq) is comprised largely of repeated DNA, including multiple copies of the spermatid-expressed Ssty gene family.
Ojarikre, Obah A.   +28 more
core   +7 more sources

Comparative Transcriptome Analysis of Differentially Expressed Genes and Signaling Pathways between XY and YY Testis in Yellow Catfish. [PDF]

open access: yesPLoS ONE, 2015
YY super-males have rarely been detected in nature and only been artificially created in some fish species including tilapia and yellow catfish (Pelteobagrusfulvidraco), which provides a promising model for testis development and spermatogenesis.
Junjie Wu   +6 more
doaj   +1 more source

Y/X-Chromosome-Bearing Sperm Shows Elevated Ratio in the Left but Not the Right Testes in Healthy Mice

open access: yesLife, 2021
The sex chromosomes play central roles in determining the sex of almost all of the multicellular organisms. It is well known that meiosis in mammalian spermatogenesis produces ~50% Y- and ~50% X-chromosome-bearing sperm, a 1:1 ratio. Here we first reveal
Chengqing Hu   +4 more
doaj   +1 more source

The Importance of Follow-Up and Evaluation of Intraoperative Findings to Determine Surgical Indications for Retractile Testis

open access: yesAdvances in Urology, 2023
Objectives. Ascending testis or acquired undescended testis develops in approximately 30% of cases of retractile testis, and orchiopexy is recommended for these cases.
Kazuro Kikkawa   +4 more
doaj   +1 more source

Cellular and hormonal disruption of fetal testis development in sheep reared on pasture treated with sewage sludge [PDF]

open access: yes, 2005
The purpose of this study was to evaluate whether experimental exposure of pregnant sheep to a mixture of environmental chemicals added to pasture as sewage sludge (n = 9 treated animals) exerted effects on fetal testis development or function ...
Paul, Catriona   +11 more
core   +1 more source

The nomad testis [PDF]

open access: yesArchives of Disease in Childhood, 2007
Perspective on the paper by Hack et al (see page 17) The abnormal position of the testis is the most common congenital anomaly of genitalia in men, with two different periods of presentation: either early in life, commonly called congenital undescended testes, or a few years later, called acquired or ascending testes.
openaire   +2 more sources

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