Results 131 to 140 of about 31,775 (244)

Ultrastructure of the reproductive system of the black swamp snake (\u3ci\u3eSeminatrix pygaea\u3c/i\u3e). Part III. The sexual segment of the male kidney. [PDF]

open access: yes, 2002
In mature male snakes and lizards, a distal portion of the nephron is hypertrophied in relation to its appearance in females and immature males. This sexual segment of the male kidney apparently provides seminal fluid that is mixed with sperm and ...
Sever, David M.
core   +1 more source

Sperm characteristics as additional evidence of close relationship between Lebiasina and Piabucina (Characiformes: Lebiasinidae: Lebiasininae)

open access: yesNeotropical Ichthyology
Spermiogenesis and spermatozoa of representatives of the genera Lebiasina and Piabucinaare described. Spermiogenesis is quite similar among all analyzed species of these genera and is identified as Type II.
Júlio César de O. Santana   +3 more
doaj   +1 more source

Application of genome tagging technology in elucidating the function of sperm-specific protein 411 (Ssp411)

open access: yesAsian Journal of Andrology
The genome tagging project (GTP) plays a pivotal role in addressing a critical gap in the understanding of protein functions. Within this framework, we successfully generated a human influenza hemagglutinin-tagged sperm-specific protein 411 (HA-tagged ...
Xue-Hai Zhou   +12 more
doaj   +1 more source

Role of Centriolar Matrix and Striated Rootlets in Centriolar Pairing and Orientation During Spermatogenesis in Hydractina echinata [PDF]

open access: yes, 1985
Transmission electron microscopy of the spermatogenic stages of the hydroid, Hydractinia echinata, reveals a series of complex structural and positional changes in the centrioles of spermatocytes and spermatids.
Kleve, Maurice G.
core   +2 more sources

Intracytoplasmic spermatid injection and in vitro maturation: fact or fiction?

open access: yesClinics, 2013
Intracytoplasmic injection with testicular spermatozoa has become a routine treatment in fertility clinics. Spermatozoa can be recovered in half of patients with nonobstructive azoospermia.
Veerle Vloeberghs   +2 more
doaj  

RBM5 Is a Male Germ Cell Splicing Factor and Is Required for Spermatid Differentiation and Male Fertility

open access: yes, 2015
Alternative splicing of precursor messenger RNA (pre-mRNA) is common in mammalian cells and enables the production of multiple gene products from a single gene, thus increasing transcriptome and proteome diversity.
Clark, Brett J   +11 more
core   +1 more source

Trim66’s paternal deficiency causes intrauterine overgrowth

open access: yesLife Science Alliance
TRIM66 is a PHD-Bromo–containing protein primarily expressed in spermatids. Here, we report a paternal effect phenotype whereby homozygous Trim66 -mutant males sired progeny overweight at birth.
Monika Mielnicka   +10 more
doaj   +1 more source

Current problems with spermatid conception [PDF]

open access: yesHuman Reproduction, 1998
M, Sousa, A, Barros, J, Tesarik
openaire   +2 more sources

TPTE, a testis-specific PTEN family member, drives spermatogenesis via PI(4,5)P<sub>2</sub> synthesis. [PDF]

open access: yesCell Death Dis
Chen X   +14 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy