Results 11 to 20 of about 325,350 (309)
Response to Comments of Peter G. Mantle. [PDF]
, 2010 The apparently high yield of testis tumors (25%) in rats exposed long-term to Ochratoxin A (OTA) is uninterpretable without data on tumor yield in unexposed rats.
Schwartz, Gary G. +2 more
core +3 more sources
Stem Cell Research & Therapy, 2019 Background Spermatogonial stem cell transplantation (SSCT) is a promising therapy in restoring the fertility of childhood cancer survivors. However, the low efficiency of SSCT is a significant concern.
Prashant Kadam +4 more
doaj +1 more source
Journal of Radiology Case Reports, 2009 Polyorchidism is a rare congenital anomaly of the genital tract in which more than two testes are present, usually within the scrotum. Less than 100 cases of polyorchidism have been reported in medical literature till date. The most common form is the presence of three testis referred as triorchidism or tritestis.
Jaiger, Chintamani +3 more
openaire +2 more sources
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
Effect of competitive cues on reproductive morphology and behavioral plasticity in male fruitflies [PDF]
, 2015 Phenotypic plasticity will be favored whenever there are significant fitness benefits of responding to environmental variation. The extent and nature of the plasticity that evolves depends on the rate of environmental fluctuations and the capacity to ...
Bretman, Amanda +3 more
core +3 more sources
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
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
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
Plasma and testicular testosterone levels, volume density and number of Leydig cells and spermatogenic efficiency of rabbits [PDF]
, 2002 Plasma and tissue testosterone concentrations were determined by radioimmunoassay in 12 eight-month-old sexually mature New Zealand White rabbits and evaluated for possible associations with spermatogenic efficiency as well as with volume density and ...
Berndtson, William E. +2 more
core +2 more sources