Results 31 to 40 of about 895,458 (301)

Seasonal Influences on Different Stages of In Vitro Fertilization: Stimulation and Fertilization [PDF]

International Journal of Fertility and Sterility, 2008
Background Effect of seasonal changes in human reproduction has been intensively researched. Some studies acknowledge influences of seasonal variation on natural conception, while others can not confirm them.
Soraya Khafri, Anoshirvan Kazemnejad, Mansoureh Movahedin, Ebrahim Hajizadeh   +3 more
doaj   +1 more source

Metabolomics analysis of the effect of GnRH on the pregnancy rate of ewes with estrus synchronization scheme based on progesterone

Frontiers in Veterinary Science
IntroductionGonadotropin-releasing hormone (GnRH) is widely used in the timed artificial insemination protocol for sheep. However, there remains a debate regarding its impact on pregnancy rates during artificial insemination.
Jing Zhang, Shuyuan Sun, Xinyu Bai, Nana Yang, Yiyong Liu, Xinglong Wu, Xiangyun Li   +6 more
doaj   +1 more source

Extracellular vesicles synchronize cellular phenotypes of differentiating cells

Journal of Extracellular Vesicles, 2021
During embryonic development, cells differentiate in a coordinated manner, aligning their fate decisions and differentiation stages with those of surrounding cells. However, little is known about the mechanisms that regulate this synchrony.
Tomohiro Minakawa, Tetsuya Matoba, Fumiyoshi Ishidate, Takahiro K. Fujiwara, Sho Takehana, Yasuhiko Tabata, Jun K. Yamashita   +6 more
doaj   +1 more source

BOARD INVITED REVIEW: Post-transfer consequences of in vitro-produced embryos in cattle.

Journal of Animal Science, 2019
In vitro embryo production (IVP) in cattle has gained worldwide interest in recent years, but the efficiency of using IVP embryos for calf production is far from optimal.
A. Ealy, L. Wooldridge, S. Mccoski
semanticscholar   +1 more source

Growth of asteroids, planetary embryos, and Kuiper belt objects by chondrule accretion [PDF]

Science Advances, 2015
Chondrules, tiny spheres found in primitive meteorites, accumulate through gas drag to form asteroids and planetary embryos. Chondrules are millimeter-sized spherules that dominate primitive meteorites (chondrites) originating from the asteroid belt. The
A. Johansen, Mordecai-Mark Mac Low, P. Lacerda, M. Bizzarro   +3 more
semanticscholar   +1 more source

Improved method for ex ovo-cultivation of developing chicken embryos for human stem cell xenografts [PDF]

, 2013
Schomann T, Qunneis F, Widera D, Kaltschmidt C, Kaltschmidt B. Improved method for ex ovo-cultivation of developing chicken embryos for human stem cell xenografts. Stem Cells International.
Barbara Kaltschmidt, Darius Widera, Qunneis, Firas, Timo Schomann, Kaltschmidt, Christian, Widera, Darius, Widera, Darius ; https://orcid.org/, Schomann, Timo, Firas Qunneis, Kaltschmidt, Barbara, Christian Kaltschmidt   +10 more
core   +1 more source

Effect of the timing of embryo isolation on the output of seedlings of sour cherry varieties when cultivated in vitro

Биотехнология и селекция растений, 2021
The breeders are faced with the task of the fastest breeding of sour cherry (Prunus cerasus L) varieties, which will be able to fill a niche among the insurance stone fruit crops, complementing the existing assortment.
N. N. Kovalenko, N. V. Polivara
doaj   +1 more source

Micro-magnetic resonance imaging study of live quail embryos during embryonic development [PDF]

, 2011
Eggs containing live Japanese quail embryos were imaged using micro-magnetic resonance imaging (μMRI) at 24-h intervals from Day 0 to 8, the period during which the main body axis is being laid down and organogenesis is taking place.
Welten, Monique, Tickle, Cheryll, Baggott, Glenn, Glenn Baggott, Morrison, Fiona, Suzanne Duce, Fiona Morrison, Cheryll Tickle, Monique Welten, Welten, M., Duce, Suzanne, Baggott, Glenn K., Morrison, F., Tickle, C., Duce, S.   +14 more
core   +1 more source

Nuclear reprogramming: kinetics of cell cycle and metabolic progression as determinants of success [PDF]

, 2012
Establishment of totipotency after somatic cell nuclear transfer (NT) requires not only reprogramming of gene expression, but also conversion of the cell cycle from quiescence to the precisely timed sequence of embryonic cleavage.
Franchesca Dawn Houghton (171722), Tsurumi Chizuko, Martin Johannes Pfeiffer (171732), Kanzler, Benoit, Fuellen, Georg, Pfeiffer, M., Tsurumi, Chizuko, Siatkowski Marcin, Benoit Kanzler (171742), Boiani, Michele, Esteves, T., Fuellen, G., Michele Boiani, Houghton, F., Georg Fuellen, Esteves Telma Cristina, Pfeiffer, Martin Johannes, Fuellen Georg, Balbach, S., Kanzler, B., Esteves, Telma Cristina, Benoit Kanzler, Kanzler Benoit, Boiani Michele, Telma Cristina Esteves, Michele Boiani (171751), Siatkowski, Marcin, Houghton Franchesca Dawn, Marcin Siatkowski, Balbach, Sebastian Thomas, Boiani, M., Georg Fuellen (16022), Telma Cristina Esteves (171719), Marcin Siatkowski (171726), Franchesca Dawn Houghton, Sebastian Thomas Balbach (171715), Chizuko Tsurumi (171736), Pfeiffer Martin Johannes, Siatkowski, M., Houghton, Franchesca Dawn, Martin Johannes Pfeiffer, Chizuko Tsurumi, Balbach Sebastian Thomas, Tsurumi, C., Sebastian Thomas Balbach   +44 more
core   +2 more sources

Acceptance of donor eggs, donor sperms, or donor embryos in Indian infertile couples

Journal of Human Reproductive Sciences, 2018
Context: The reduction or loss of natural fertility is deeply painful in couples that are considering the use of donor gametes or donor embryos. This is the first study to assess the acceptability of donor gametes or embryos in Indian population.
Kaberi Banerjee, Bhavana Singla
doaj   +1 more source