Results 31 to 40 of about 122,119 (309)

Improve Pasture or Feed Grain? Greenhouse Gas Emissions, Profitability, and Resource Use for Nelore Beef Cattle in Brazil’s Cerrado and Amazon Biomes

Animals, 2020
Economic development, international food and feed demand, and government policies have converted Brazil’s natural ecosystems into agricultural land.
Luana Molossi, Aaron Kinyu Hoshide, Lorena Machado Pedrosa, André Soares de Oliveira, Daniel Carneiro de Abreu   +4 more
doaj   +1 more source

Laser microdissection as a new approach to prefertilization genetic diagnosis [PDF]

, 2000
The genetic status of oocytes can be determined by polar body (PB) analysis. Following PB extraction, a genetic evaluation is performed. As each PB contains the complementary genetic material of the oocyte, PB analysis reveals information about its ...
Schütze, Karin, Buchholz, Tina, Clement-Sengewald, Annette   +2 more
core   +1 more source

Ca2+ signals co-ordinate zygotic polarization and cell cycle progression in the brown alga, Fucus serratus. [PDF]

, 2008
Zygotes of the fucoid brown algae provide excellent models for addressing fundamental questions about zygotic symmetry breaking. Although the acquisition of polarity is tightly coordinated with the timing and orientation of the first asymmetric division ...
Brownlee, C, Martin R. McAinsh, Martin J. Genner, Colin Brownlee, McAinsh, M.R., Genner, M.J., Bothwell, John, Genner, Martin J., Kisielewska, Jolanta, McAinsh, Martin R., John H. F. Bothwell, Kisielewska, J, Bothwell, J.H., Jolanta Kisielewska, Bothwell, John H. F., Bothwell, JHF, Bothwell, J.H.F., Brownlee, Colin, McAinsh, MR, Kisielewska, J., Genner, MJ, Brownlee, C.   +21 more
core   +1 more source

Effect of Lepidium meyenii on in vitro fertilization via improvement in acrosome reaction and motility of mouse and human sperm

Reproductive Medicine and Biology, 2019
Purpose The direct effects of Lepidium meyenii (Maca) on sperm remain unclear. Herein, we examined the direct effect of Maca on in vitro fertilization. Methods We examined the fertilization rate in a mouse model and the rate of acrosome reaction in sperm
Yusuke Aoki, Akira Tsujimura, Yuki Nagashima, Ippei Hiramatsu, Yuka Uesaka, Taiji Nozaki, Tatsuya Ogishima, Masato Shirai, Yukihiro Shoyama, Hiromitsu Tanaka, Shigeo Horie   +10 more
doaj   +1 more source

Ovarian volume correlates strongly with the number of non-growing follicles in the human ovary [PDF]

, 2012
A reliable indirect measure of ovarian reserve for the individual woman remains a challenge for reproductive specialists. Using descriptive statistics from a large-scale study of ovarian volumes, we have developed a normative model for healthy females ...
Kelsey, Tom, Wallace, W Hamish B, Thomas W. Kelsey, Wallace, W. Hamish B., Kelsey, Thomas W., W. Hamish B. Wallace   +5 more
core   +1 more source

#35 : Tail-First Sperm Injection Significantly Improved the Fertilization Rates More Than the Head-First Sperm Injection Regardless of the Elasticity of the Oocyte Membrane Following Piezo-ICSI

Fertility & Reproduction, 2023
Background and Aims: Little information is available for investigating the effect of the direction of sperm injected into the cytoplasm on clinical results for human oocytes following intracytoplasmic sperm injection (ICSI).
Kenichiro Hiraoka, Nozomi Uchida, Hayata Nakajo, Moe Sato, Saki Ishikawa, Toshio Sujino, Akira Komiya, Yuko Takayanagi, Yurie Nako, Makiko Tajima, Kiyotaka Kawai   +10 more
doaj   +1 more source

Predictive value of sperm morphology and movement characteristics in the outcome of in vitro fertilization of human oocytes

, 1989
One hundred fourteen semen samples from Chinese males were analyzed for routine semen parameters including the semen volume, sperm count, percentage motility, and percentage normal morphology. Of these 114 samples, 54 also had movement characteristics of
So, WWK, Chan, STH, Ho, PC, Chan, SYW, Ma, HK, Chan, YF, Wang, C   +6 more
core   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source

Inhibiting sperm pyruvate dehydrogenase complex and its E3 subunit, dihydrolipoamide dehydrogenase affects fertilization in Syrian hamsters. [PDF]

PLoS ONE, 2014
BACKGROUND/AIMS: The importance of sperm capacitation for mammalian fertilization has been confirmed in the present study via sperm metabolism.
Archana B Siva, Subbarayalu Panneerdoss, Purnima Sailasree, Durgesh K Singh, Duvurri B Kameshwari, Sisinthy Shivaji   +5 more
doaj   +1 more source

THE INFLUENCE OF RADIATION ON HUMAN FERTILITY [PDF]

Reproduction, 1968
Summary. The number of children born to 180 females exposed to abdominal fluoroscopy in connection with an attack of intussusception in infancy or childhood was compared to the number born to women who were treated for the same disease without fluoroscopy.
L, Mondorf, M, Faber
openaire   +2 more sources