Sperm collection in Black-legged Kittiwakes and characterization of sperm velocity and morphology
Avian Research, 2018 Background Collecting and studying live sperm is central to many important fields of biology. Yet, a simple method to collect live sperm is lacking in wild seabird species.
Ségolène Humann-Guilleminot +6 more
doaj +1 more source
Validation of the polysemen admixture on viability and acrosomal morphology of boar spermatozoa [PDF]
, 2007 Semen were collected using artificial vagina (AV), from 5 large white boars aged 2-2.5 years twice a week for 16 weeks in each of the two seasons, early rainy (ER) and late rainy (LR) seasons, to determine the effects of multiple semen pool admixture on ...
Ogbuewu, IP +3 more
core
Abnormal early cleavage events predict early embryo demise: sperm oxidative stress and early abnormal cleavage. [PDF]
, 2014 Human embryos resulting from abnormal early cleavage can result in aneuploidy and failure to develop normally to the blastocyst stage. The nature of paternal influence on early embryo development has not been directly demonstrated although many studies ...
Barker, Christopher M +4 more
core +2 more sources
Identification of Fis1 Interactors in Toxoplasma gondii Reveals a Novel Protein Required for Peripheral Distribution of the Mitochondrion [PDF]
, 2020 Toxoplasma gondii’s single mitochondrion is very dynamic and undergoes morphological changes throughout the parasite’s life cycle. During parasite division, the mitochondrion elongates, enters the daughter cells just prior to cytokinesis, and undergoes ...
Arrizabalaga, Gustavo +2 more
core +1 more source
Cells, 2021 Mammals exhibit a tremendous amount of variation in sperm morphology and despite the acknowledgement of sperm structural diversity across taxa, its functional significance remains poorly understood. Of particular interest is the sperm of rodents.
Kristin A. Hook +2 more
doaj +1 more source
Another look at human sperm morphology [PDF]
Human Reproduction, 2015 Can a standardized assessment of abnormal human sperm morphology provide additional useful information by identifying men with more severe disturbances in different types of abnormalities?Definition-based categorization of sperm head, midpiece and tail defects has shown how differently these abnormalities are distributed in fertile men and other groups
J, Auger, P, Jouannet, F, Eustache
openaire +2 more sources
Application of Testsimplets for classification of sperm morphology [PDF]
, 1986 Testsimplets is a pre-stained, ready-to-use slides for differential blood cell counts. We have been using this Testsimplets slide to classify sperm morphology since 1978. Its characteristics is that it is very easy to prepare specimens quickly and we can
岩崎, 晧 +4 more
core
Methylation Status of Imprinted Genes and Repetitive Elements in Sperm DNA from Infertile Males [PDF]
, 2011 Stochastic, environmentally and/or genetically induced disturbances in the genome-wide epigenetic reprogramming processes during male germ-cell development may contribute to male infertility.
El Hajj, N. +7 more
core +1 more source
Shape mode analysis exposes movement patterns in biology: flagella and flatworms as case studies [PDF]
, 2014 We illustrate shape mode analysis as a simple, yet powerful technique to concisely describe complex biological shapes and their dynamics. We characterize undulatory bending waves of beating flagella and reconstruct a limit cycle of flagellar oscillations,
Friedrich, Benjamin M. +3 more
core +6 more sources
Frontiers in EndocrinologyObjectiveThis study aims to provide reference data for sperm morphology in a healthy, fertile male population providing a foundation for future studies on male infertility assessment and sperm selection in assisted reproductive technologies.MethodsThe ...
Longlong Fu +9 more
doaj +1 more source