Results 11 to 20 of about 273,320 (297)
The tailored sperm cell. [PDF]
J Plant Res, 2017 Sperm are ubiquitous and yet unique. Genes involved in sexual reproduction are more divergent than most genes expressed in non-reproductive tissues. It has been argued that sperm have been altered during evolution more than any somatic cell. Profound variations are found at the level of morphology, motility, search strategy for the egg, and the ...
Alvarez L.
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Spatial Organization of the Sperm Cell Glycoproteome. [PDF]
Mol Cell ProteomicsSperm cells are terminally differentiated cells that are essential for reproduction in sexually reproducing species. Consistent with their highly specialized function, sperm cells harbor a unique proteome containing many proteins not expressed in somatic cells.
Ji R +8 more
europepmc +4 more sources
Frontiers in Cell and Developmental Biology, 2021 The extraction of high-quality ribonucleic acid (RNA) from tissues and cells is a key step in many biological assays. Guanidinium thiocyanate-phenol-chloroform (AGPC) is a widely used and efficient method to obtain pure RNA from most tissues and cells ...
Martin Roszkowski, Isabelle M. Mansuy
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Chemotaxis of sperm cells [PDF]
Proceedings of the National Academy of Sciences, 2007 We develop a theoretical description of sperm chemotaxis. Sperm cells of many species are guided to the egg by chemoattractants, a process called chemotaxis. Motor proteins in the flagellum of the sperm generate a regular beat of the flagellum, which propels the sperm in a fluid.
Friedrich, B., Jülicher, F.
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eLife, 2020 Fertilization of an egg cell by more than one sperm cell can produce viable progeny in a flowering plant.
Ajeet Chaudhary +2 more
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Prominin‐1 expression in the testis/epididymis and fertility
Reproductive Medicine and Biology, 2023 The contribution of Prominin‐1 (aka CD133) to male fertility has recently been (re)investigated, with contradictory results. Early findings, essential for deciphering its role, have unfortunately been neglected.
Christine A. Fargeas +2 more
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Step by step optimization of a sperm cryopreservation protocol for spotted wolffish (Anarhichas minor Olafsen, 1772) [PDF]
, 2020 Spotted wolffish Anarhichas minor reproduction in captivity is dependent on in vitro fertilization. However, low sperm volume with relatively low cell concentration and the lack of gametes synchronization (simultaneous availability of mature eggs and ...
Beirão, J. +3 more
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Endocrine Connections, 2023 The Chinese soft-shelled turtle, Pelodiscus sinensis (Reptilia: Trionychidae), is a typical seasonal breeding species, and its spermatogenesis pattern is complex. In this study, the process of sperm cell development was studied using histology.
Yu-Fei Yang +6 more
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On the Origin and Evolution of Sperm Cells
Cells, 2022 Sperm cells have intrigued biologists since they were first observed nearly 350 years ago by Antonie van Leeuwenhoek and Johan Ham [...]
Heidi S. Fisher +3 more
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Polyspermy Block in the Central Cell During Double Fertilization of Arabidopsis thaliana
Frontiers in Plant Science, 2021 During double fertilization in angiosperms, two male gametes (sperm cells), are released from a pollen tube into the receptive region between two female gametes; the egg cell and the central cell of the ovule.
Shiori Nagahara +5 more
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