Results 11 to 20 of about 320,721 (269)
Stem Cell Research & Therapy, 2018 Background Spermatogonial stem cell transplantation (SSCT) could become a fertility restoration tool for childhood cancer survivors. However, since in mice, the colonization efficiency of transplanted spermatogonial stem cells (SSCs) is only 12%, the ...
Prashant Kadam +5 more
doaj +1 more source
Comparative Transcriptome Analysis of Differentially Expressed Genes and Signaling Pathways between XY and YY Testis in Yellow Catfish. [PDF]
PLoS 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
Life, 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
Spermatogonial stem cells as a source for regenerative medicine
Middle East Fertility Society Journal, 2012 Several researchers have reported the derivation of multipotent cells from both mouse and human spermatogonial stem cells. These spermatogonia-derived stem cells show similarities with embryonic stem cells both for phenotype and functionality, indicating
Liang Ning +4 more
doaj +1 more source
Advances 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
Testicular endocrine activity is upregulated by D-Aspartic acid in the green frog Rana esculenta [PDF]
, 2004 This study investigated the involvement of D-aspartic acid (D-Asp) in testicular steroidogenesis of the green frog Rana esculenta and its effect on stimulation of thumb pad morphology and glandular activity, a typical testosterone-dependent secondary ...
ASSISI, LOREDANA +5 more
core +1 more source
Molecular cloning and sequence analysis of the cDNA encoding the human acrosin-trypsin inhibitor (HUSI-II) [PDF]
, 1991 A complete cDNA clone encoding the human acrosin-trypsin inhibitor HUSI-II has been isolated from a cDNA library of human testis and completely sequenced.
Fink, Edwin +2 more
core +1 more source
Larger testes are associated with a higher level of polyandry, but a smaller ejaculate volume, across bushcricket species (Tettigoniidae) [PDF]
, 2010 While early models of ejaculate allocation predicted that both relative testes and ejaculate size should increase with sperm competition intensity across species, recent models predict that ejaculate size may actually decrease as testes size and sperm ...
Darren J. Parker +3 more
core +3 more sources