Results 111 to 120 of about 726,910 (390)
A noninvasive method for in situ determination of mating success in female American lobsters (Homarus americanus) [PDF]
, 2014 Despite being one of the most productive fisheries in the Northwest Atlantic, much remains unknown about the natural reproductive dynamics of American lobsters.
Clancy, Michael +5 more
core +1 more source
Sperm Activation: Time and Tide Wait for No Sperm [PDF]
Current Biology, 2006 Proper timing of sperm activation is required for reproductive success in Caenorhabditis elegans. The swm-1 gene encodes a predicted protease inhibitor that regulates sperm activation and the acquisition of amoeboid motility.
openaire +3 more sources
Sperm Motility Should be Assessed in Fresh Sperm and After a Sperm Washing Procedure [PDF]
Archives of Andrology, 1992 A prospective study was carried out on semen samples from 118 consecutive unselected men attending our infertility clinic to determine whether sperm motility may be affected by seminal plasma. The incidence of asthenozoospermia as defined by fewer than 50% of spermatozoa with forward progressive motility in the untreated semen was 37.4%. This value was
Gonzales Rengifo, Gustavo Francisco +1 more
openaire +3 more sources
The Impact of DNA as a Chemical Admixture for Cementitious Materials
Advanced Materials Technologies, EarlyView.DNA molecules are added to cement pastes and their effects on rheology and hydration time are studied. DNA's chemical structure is composed of polysaccharide and phosphate groups, which are active functional groups in different commercial chemical admixtures: Viscosity modifiers and superplasticizers.
Alexander Mezhov +4 more
wiley +1 more source
Co-evolution of male and female reproductive traits across the Bruchidae (Coleoptera) [PDF]
, 2008 1. Despite the obvious importance of spermatozoa to individual reproductive success a general explanation of variation in spermatozoan form and function is still lacking. In species with internal fertilization, sperm not only have to interact with the
Andrés +57 more
core +1 more source
Magnetic Field Driven Microrobot Based on Hydrogels
Advanced Robotics Research, EarlyView.Hydrogel‐based magnetic microrobots synergize remote magnetic control with the biocompatibility of flexible hydrogels, emerging as promising tools for minimally invasive biomedicine. This enables remotely controllable, untethered navigation within complex biological microenvironments.
Juncai Song, Yubing Guo
wiley +1 more source
REVIEW: Current Status of Extenders and Cryoprotectants on Fish Spermatozoa Cryopreservation [PDF]
, 2005 An important component of many studies of cryopreservation of fish spermatozoa is the type of extenders and cryoprotectants. The suitability of extenders and cryoprotectants differs from one fish to another.
Z.A, Muchlisin
core
A genetic variant of the sperm-specific SLO3 K+ channel has altered pH and Ca2+ sensitivities [PDF]
, 2017 To fertilize an oocyte, sperm must first undergo capacitation in which the sperm plasma membrane becomes hyperpolarized via activation of potassium (K(+)) channels and resultant K(+) efflux.
Butler, Alice +8 more
core +2 more sources
Advanced Science, EarlyView.DECENT is a deep learning method that enhances noninvasive preimplantation genetic testing by accurately reconstructing embryonic copy number variations (CNVs) from cell‐free DNA in spent embryo culture media. By mitigating maternal contamination, DECENT improves diagnostic accuracy, even with high contamination levels, offering a reliable, noninvasive
Zhenyi Zhang +3 more
wiley +1 more source
Advanced Science, EarlyView.CRISPR/Cas9, while transformative, faces challenges in specificity, precision, delivery, accessibility, flexibility, and safety. This review addresses these limitations by highlighting strategies to reduce off‐target effects, exploring HDR‐based and alternative editing approaches, and evaluating advanced delivery mechanisms.
Muna Alariqi +8 more
wiley +1 more source