Results 11 to 20 of about 138,467 (157)
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
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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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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Sperm Cells of a Primitive Strepsipteran [PDF]
Insects, 2013 The unusual life style of Strepsiptera has presented a long-standing puzzle in establishing its affinity to other insects. Although Strepsiptera share few structural similarities with other insect orders, all members of this order share a parasitic life style with members of two distinctive families in the Coleoptera—the order now considered the most ...
Nardi, J +5 more
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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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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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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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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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Veterinary Sciences, 2022 After the copulation process, some sperm start the long journey with an ultimate goal of fertilizing the oocyte. Inside the oviduct, sperm are stored, waiting for the ovulated oocyte where they bind to the apical surface of the oviduct cells, which in ...
Mohamed M. M. El-Sokary +2 more
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