Results 1 to 10 of about 6,581 (145)

Rheotaxis facilitates upstream navigation of mammalian sperm cells [PDF]

eLife, 2014
A major puzzle in biology is how mammalian sperm maintain the correct swimming direction during various phases of the sexual reproduction process. Whilst chemotaxis may dominate near the ovum, it is unclear which cues guide spermatozoa on their long ...
Vasily Kantsler, Jörn Dunkel, Martyn Blayney, Raymond E Goldstein   +3 more
doaj   +5 more sources

Identification of genomic regions associated with total and progressive sperm motility in Italian Holstein bulls

Journal of Dairy Science, 2023
: Sperm motility is directly related to the ability of sperm to move through the female reproductive tract to reach the ovum. Sperm motility is a complex trait that is influenced by environmental and genetic factors and is associated with male fertility,
J. Ramirez-Diaz, S. Cenadelli, V. Bornaghi, G. Bongioni, S.M. Montedoro, A. Achilli, C. Capelli, J.C. Rincon, M. Milanesi, M.M. Passamonti, L. Colli, M. Barbato, J.L. Williams, P. Ajmone Marsan   +13 more
doaj   +1 more source

Sperm Autoantigens and Fertilization: II. Effects of Anti-Guinea Pig Sperm Autoantibodies on Sperm-Ovum Interactions [PDF]

Biology of Reproduction, 1981
Bivalent (lgG) and monovalent (Fab) antibodies isolated from antisperm autoantiserum of the guinea pig were tested for their effects on 1) the penetration of guinea pig anna pellucidaby acrosome-reacted guinea pig spermatozoa and 2) the fusion of acrosome-reacted guinea pig spermatozoa with plasma membranes of guinea pig and hamster ova.
R, Yanagimachi, A, Okada, K S, Tung
openaire   +2 more sources

Assessment of Expression Levels and Localization Patterns of Phospholipase C zeta in Different Grades of HOST in Human Sperm [PDF]

International Journal of Fertility and Sterility
Background: Phospholipase C zeta (PLC-ζ) deficiency in sperm can underlie oocyte activation failure after intracytoplasmicsperm injection (ICSI). The aim of this study was to determine PLC-ζ expression and location in individualspermatozoa in each host ...
Azra Allahveisi, Elham Yousefian
doaj   +1 more source

The chicken embryo and its micro environment during egg storage and early incubation [PDF]

, 2008
When egg storage periods are prolonged (>7 days), hatchability and chick quality declines. The reason for this decline has been investigated, but is still not completely understood.
Brand, H., van den, Kemp, B., Meijerhof, R., Reijrink, I.A.M.   +3 more
core   +2 more sources

Characterisation of ADAMs (protein)of bovine seminal plasma by Mass Spectrometry

Kufa Journal for Veterinary Medical Sciences, 2019
This study has been designed to analyse the secreted and soluble proteins in bovine seminal plasma by mass spectrometry. The majority of these proteins are produced by accessory glands, and partially by testis, epididymis, ductus deferens and vas ...
Hazem Almhanna
doaj   +1 more source

Assembly of the Inner Perivitelline Layer, a Homo log of the Mammalian Zona Pellucida: An Immunohistochemical and Ultrastructural Study [PDF]

, 2012
The avian inner perivitelline layer (IPVL), a homologous structure to the mammalian zona pellucida, is deposited between the granulosa cells and the oocyte cell membrane during folliculogenesis. The glycoprotein meshwork of the IPVL forms a 3-dimensional
Bausek N., Bramwell R.K., Callebaut I., Daniela Rodler, Dunbar B.S., Epifano O., Fred Sinowatz, Goudet G., Jovine L., Jovine L., King A.S., Kinoshita M., Lefievre L., Litscher E.S., Menkhorst E., Mori M., Mugnier S., Pan J., Rahman M.A., Rahman M.A., Richardson K.C., Sasanami T., Sasanami T., Sasanami T., Sasanami T., Sato T., Sinowatz F., Smith J., Spargo S.C., Stewart S.G., Takeuchi Y., Tomohiro Sasanami, Waclawek M., Wassarman P.M., Wassarman P.M., Wassarman P.M., Wyburn G.M., Wyburn G.M.   +37 more
core   +1 more source

Postcopulatory sexual selection [PDF]

, 2002
The female reproductive tract is where competition between the sperm of different males takes place, aided and abetted by the female herself. Intense postcopulatory sexual selection fosters inter-sexual conflict and drives rapid evolutionary change to ...
A Civetta, A Singson, A Singson, AB Carvalho, AJ Bateman, AK Chippindale, AK Chippindale, AP Møller, AP Møller, B Hellriegel, B Holland, B Kempenaers, BC Sheldon, BC Sheldon, BT Preston, C Darwin, CW LaMunyon, D Carré, D Childress, D Haig, D Hosken, D Pfaff, D Vacquier, D Yamamoto, DA Roff, DB Lank, DC Presgraves, DC Shakes, DJ Begun, DJ Hosken, DM Rand, DW Coltman, E Ottaviano, E Ruiz-Pesini, EC Metz, ED Ketterson, EH Nicholls, EJA Cunningham, FD Karim, FM Hunter, FM Hunter, G Arnqvist, G Arnqvist, GA Parker, GA Parker, GA Parker, GA Parker, GA Parker, GA Parker, H Montell, HDM Moore, IM Matthews, J Nance, JB Wolf, JDD Bishop, JHJ Van der Werf, JK Waage, JM Cheverud, JM Martin-Villa, JS Takahashi, JV Briskie, JV Briskie, K Uchida, KA Hughes, L Andersson, L Delph, L Keller, LD Hurst, LW Simmons, LW Simmons, M Andersson, M Edvardsson, M Lynch, M Ridley, MK Dahle, N Wilson, P David, P Jivoff, P Stockely, P Stockley, P Ward, P Ward, PA Cook, PS Chen, R Lande, R Thornhill, RD Catalano, RL Smith, RL Smith, RL Trivers, RR Baker, RR Snook, RR Snook, RR Warner, S Gavrilets, S Palumbi, S Pitnick, S Pitnick, S Pitnick, S Stearns, SA Frank, SM Shuster, SM Shuster, SW L' Hernault, T Chapman, T Chapman, T Chapman, T Pizzari, T Pizzari, T Prout, T Prout, T Tregenza, T Tregenza, TFC Mackay, TH Clutton-Brock, TM Panhuis, TR Birkhead, TR Birkhead, TR Birkhead, TR Birkhead, TR Birkhead, TR Birkhead, TR Halliday, UW Huck, W Swanson, WG Eberhard, WJ Swanson, WJ Swanson, WJ Swanson, WJ Swanson, WR Rice, WR Rice, WR Rice   +132 more
core   +1 more source

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
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Pregnancy [PDF]

, 2009
Histology blog entry for February 11, 2009 about ...
Krause, William J., II, 1942-
core   +1 more source