Results 21 to 30 of about 56,247 (306)

Cytogerontology since 1881: A reappraisal of August Weismann and a review of modern progress [PDF]

, 1982
Cytogerontology, the science of cellular ageing, originated in 1881 with the prediction by August Weismann that the somatic cells of higher animals have limited division potential.
A Carrel, A Comfort, A Götte, A Weismann, A Weismann, A Weismann, A Weismann, A Weismann, A Weismann, AH Ebeling, AJ Nienhaus, AL Muggleton-Harris, AO Martinez, AR Sheldrake, AR Williamson, B Charlesworth, B Hill, BL Strehler, C Darwin, C Zavala, CB Harley, CB Harley, CH Evans, CJ Epstein, CL Bunn, CM Child, CM Child, CS Minot, CW Daniel, D Harman, D Kram, D Lack, DA Ogden, DE Brash, E Bell, E Metchnikoff, E Stecker, EL Schneider, F Vogel, FM Burnet, GA Sacher, GC Williams, GH Stein, GJ Todaro, GM Martin, GM Martin, GM Martin, GM Martin, GM Martin, GP Bidder, GR Martin, HE Swim, HEM Kay, HJ Curtis, HR Hirsch, HW Woolhouse, I Zs-Nagy, J Bjorksten, J Maynard Smith, J Maynard Smith, J Ponten, J Smith-Sonneborn, JA Witkowski, JBS Haldane, JF Stanley, JR Smith, JR Smith, JR Smith, K Illmensee, K Kontermann, KH Rothfels, L Hayflick, L Hayflick, L Hayflick, L Szilard, LC Cole, LC Stevens, LE Orgel, LE Orgel, MR Rose, P Calow, PB Medawar, PB Medawar, PL Krohn, R Holliday, R Holliday, R Holliday, R Holliday, R Holliday, R Holliday, R Holliday, R Long De, R Pearl, R Rosenberger, RD Guthrie, RG Cutler, RG Cutler, RW Hart, S Linn, SH Vines, SJ Fulder, T Cremer, TBL Kirkwood, TBL Kirkwood, TBL Kirkwood, TBL Kirkwood, TBL Kirkwood, Thomas B. L. Kirkwood, Thomas Cremer, TM Sonneborn, TM Sonneborn, W Topp, WD Hamilton, ZhA Medvedev, ZhA Medvedev   +114 more
core   +1 more source

Association of the microbial culture of follicular fluid, vaginal swab and catheter tip with β–hCG IVF positive and negative

Asian Pacific Journal of Reproduction, 2022
Objective: To find out the association of microbial contamination with β-human chorionic gonadotropin ( β-hCG) in-vitro fertilization (IVF) positive and negative.
Manoj Chellani, Manju Chellani, Sandeep Rahangdale   +2 more
doaj   +1 more source

In vitro production of bovine embryos derived from individual donors in the Corral® dish [PDF]

, 2017
Background: Since the identity of the embryo is of outmost importance during commercial in vitro embryo production, bovine oocytes and embryos have to be cultured strictly per donor.
A Cebrian-Serrano, Ann Van Soom, C Carolan, C O’Neill, C O’Neill, E Wydooghe, Eline Wydooghe, EM O’Doherty, Erik Mullaart, G Vajta, Hiemke M. Knijn, I Donnay, IGF Goovaerts, J Merton, JF Hasler, JF Hasler, JHF Pontes, JS Merton, K Matsuura, L Ferry, LJ Ding, M Hoelker, M Lane, Maaike Catteeuw, ML Reed, N Gopichandran, NK Khurana, P George, PEJ Bols, PEJ Bols, R Boni, R Roover De, RB Gilchrist, S Spanos, SA Machado, SJ Dai, T Ebner, T Fujita, WG Feng   +38 more
core   +2 more sources

The lady vanishes: what's missing from the stem cell debate [PDF]

, 2006
Most opponents of somatic cell nuclear transfer and embryonic stem cell technologies base their arguments on the twin assertions that the embryo is either a human being or a potential human being, and that it is wrong to destroy a human being or ...
A. Fagot-Largeault, A. Jacobs, A. M. Honore, A. Ryan, C. A. MacKinnon, C. McLeod, C. Pateman, C. Waldby, CCNE (Comite Consultatif National d’Ethique), CCNE (Comite Consultatif National d’Ethique) and Nationaler Ethikrat. Opinion no. 77, D. B. Resnik, D. Dickenson, D. Dickenson, D. Dickenson, D. Dickenson, D. Dickenson, D. Dickenson, D. Dickenson, Donna L. Dickenson, E. Marshall, G. A. Cohen, G. Meilander, G. W. F. Hegel, HUGO (Human Genome Organisation) Ethics Council, I. Schneider, J. Boyle, J. E. Penner, J. E. Penner, J. L. Schroeder, J. Locke, J. Mahoney, J. McHale, J. Montgomery, J. W. Harris, J. Waldron, K. E. Ferguson, K. Momberger, L. Brace, M. J. Radin, R. Macklin, R. R Faden, Royal College of Obstetricians and Gynaecologists (RCOG) Ethics Committee, S. Dodds, S. E. Lanzendorf, S. Holland, S. Holm, T. Grey, T. Harrison, T. Murray, W. E. Connolly, W. S. Hwang   +50 more
core   +2 more sources

Maturation, Spawning Period, and Fecundity of the White Crappie, Pomoxis annularis Rafinesque, in Beaver Reservoir, Arkansas [PDF]

, 1981
Gonosomatic indices and ovum diameter frequency distributions showed that the Beaver Reservoir white crappie spawns from late April through May. During the spawning season females release eggs more than once.
Kilambi, Raj V., Thomas, Janet L.
core   +2 more sources

Vat Polymerization 3D Printing for Controlled Drug Release Applications

Advanced Materials Technologies, EarlyView.
ABSTRACT Vat polymerization (VP) 3D printing, a light‐based additive manufacturing technique, has emerged as a promising technique for fabricating complex drug delivery systems with high precision and spatial resolution. This layer‐by‐layer manufacturing process enables the creation of intricate geometries and customizable architectures, which are ...
Hafiz Busari, O. Thompson Mefford, M. Aaron Vaughn   +2 more
wiley   +1 more source

Magnetic Droplet Manipulation on Open Surfaces

Advanced Materials Technologies, EarlyView.
Recent advances in the manipulation of magnetic droplets demonstrate various manipulations on open surfaces, including transport, splitting, merging, and force‐controlled motion, enabled by magnetic particles and external fields. ABSTRACT Manipulation of liquids on a smaller scale enables applications in various fields, particularly diagnostics and ...
Robab Jahangir, Vahid Nasirimarekani
wiley   +1 more source

Pre‐Encoded IFN‐I Sensitivity Exacerbates Memory T Cell Senescence in Solid Tumors

Advanced Science, EarlyView.
Type I interferon (IFN‐I) signaling promotes p21‐dependent cell cycle arrest in senescent tumor‐specific memory T cells, resulting in poor proliferative responses and solid tumor regression during cancer vaccination. Conversely, IFNα/β receptor blockade reinvigorates T cell proliferation to regress solid tumors and is more effective with increasing ...
Andrew Nguyen, Scott R Walsh, Li Deng, Lan Chen, Yonghong Wan   +4 more
wiley   +1 more source

Investigation of the Effect of Polycystic Ovary Syndrome on the Expression of the Sirtuin-3 Gene in the Ovum of the NMRI Mice

Majallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Īlām, 2022
Introduction: Increasing levels of free radicals in the ova reduce the quality of their fertilization. Investigations have revealed the elevated production of tissue and serum-free radicals in women with polycystic ovary syndrome. Sirtuin-3 is located in
Hanieh Jalali, Mahnaz Azarnia, Fatemeh Kamalipour   +2 more
doaj  

Research Progress on the Active Substances of Sea Cucumber Ovum [PDF]

Shipin Kexue
As an important component of sea cucumber viscera, sea cucumber ovum contains polypeptides, polysaccharides, saponins, and so on, which has biological activities such as enhancing immunity, antioxidant, antitumor, and improving reproductive function, and
WANG Qiuting, SUN Zuli, CHEN Juan, LI Mingbo, SUN Leilei
doaj   +1 more source