Results 81 to 90 of about 158,096 (183)
The Comparison of Efficiency of Density Gradient Centrifugation and Zeta Methods in Separation of Mature Sperm with Normal Chromatin Structure [PDF]
Cell Journal, 2009 Objective: To examine the efficiency of both the Zeta and density gradient centrifugation(DGC) methods for the selection of normal chromatin sperm by TUNEL, sperm chromatindispersion (SCD), acridine orange and chromomycin A3 (CMA3).Materials and Methods:
Mohammad Hossein Nasr Esfahani +5 more
doaj
Sperm competition: linking form to function
BMC Evolutionary Biology, 2008 Background Using information from physics, biomechanics and evolutionary biology, we explore the implications of physical constraints on sperm performance, and review empirical evidence for links between sperm length and sperm competition (where two or ...
Simmons Leigh W +2 more
doaj +1 more source
Reproductive Biology and Endocrinology, 2010 Background Before ovulation, sperm-oviduct interaction mechanisms may act as checkpoint for the selection of fertilizing spermatozoa in mammals. Postovulatory mating does not allow the sperm to attach to the oviduct, and spermatozoa may only undergo some
Pintado Belén +4 more
doaj +1 more source
SPERM QUALITY IN RATS PREDISPOSED TO THE MANIFESTATION OF CATATONIC REACTIONS
Вавиловский журнал генетики и селекции, 2018 Catatonia is a psychopathological syndrome displayed as a motor disorder. Catatonia is a sign of many menthal disorders, particularly schizophrenia and depression, with a wide disrtibution in the human population.
M. A. Kleshchev +2 more
doaj +1 more source
Sperm morphology, swimming velocity, and longevity in the house sparrow Passer domesticus [PDF]
, 2018 Sperm competition exerts strong selection on males to produce spermatozoa with an optimal morphology that maximizes their fertilization success. Long sperm were first suggested to be favored because they should swim faster.
Helfenstein, Fabrice +2 more
core
Race and Assisted Reproduction: Implications for Population Health [PDF]
, 2018 This Article emerges from Fordham Law Review’s Symposium on the fiftieth anniversary of Loving v. Virginia, the case that found antimiscegenation laws unconstitutional.
Ahmed, Aziza
core +2 more sources
Association between hypo-osmotic swelling test-induced tail swelling patterns and sperm quality
Future Science OAAim: The current sperm selection procedure for intracytoplasmic sperm injection has limited ability to detect structural and functional abnormalities of the spermatozoa.
Salima Daoud +5 more
doaj +1 more source
Theriogenology WildGamete preservation of wild species is a priority in conservation programs. However, field techniques to recover sperm from deceased animals may impair its final quality.The cryopreservation process also has its challenges, and the minimal required ...
Eduardo Arroyo +3 more
doaj +1 more source
Wild yellow dung fly females may not select sperm based on dung pat microclimate but could nevertheless benefit from polyandry [PDF]
, 2018 Molecular techniques have substantially improved our knowledge of postcopulatory sexual selection. Nevertheless, studies examining sperm utilization in natural populations of nonsocial insects are rare, support for sperm selection (biased use of stored ...
Bussière, Luc +2 more
core
AnimalsThe aim of this study was to analyze suitable genetic models and selection indices to estimate the genetic parameters and breeding values of native Thai roosters. A total of 3475 records of seven semen traits (mass movement, semen pH, semen color, volume,
Iin Mulyawati Daryatmo +3 more
doaj +1 more source