Results 131 to 140 of about 273,320 (297)

The Effects of Cell Phone Waves (900 MHz-GSM Band) on Sperm Parameters and Total Antioxidant Capacity in Rats [PDF]

International Journal of Fertility and Sterility, 2013
Background: There is tremendous concern regarding the possible adverse effects of cell phone microwaves. Contradictory results, however, have been reported for the effects of these waves on the body.
Masoud Ghanbari, Seyed Bagher Mortazavi, Ali Khavanin, Mozafar Khazaei   +3 more
doaj  

Hydrodynamic Clustering of Human Sperm in Viscoelastic Fluids

Scientific Reports, 2018
We have numerically investigated sperm clustering behaviours, modelling cells as superpositions of regularised flow singularities, coarse-grained from experimentally obtained digital microscopy of human sperm, both in watery medium and a highly viscous ...
Kenta Ishimoto, Eamonn A. Gaffney
doaj   +1 more source

Physics of Microswimmers - Single Particle Motion and Collective Behavior

, 2014
Locomotion and transport of microorganisms in fluids is an essential aspect of life. Search for food, orientation toward light, spreading of off-spring, and the formation of colonies are only possible due to locomotion.
Elgeti, Jens, Gompper, Gerhard, Winkler, Roland G.   +2 more
core   +1 more source

Fluorescent nanodiamond labels: Size and concentration matters for sperm cell viability. [PDF]

Mater Today Bio, 2023
San-Martin CR, Zhang Y, Hamoh T, Berendse L, Klijn C, Li R, Sigaeva A, Kawałko J, Li HT, Tehrani J, Mzyk A, Schirhagl R.   +11 more
europepmc   +1 more source

Chemotaxis of sperm cells

, 2009
Sperm cells are guided to the egg by chemoattractants in many species. Sperm cells are propelled in a liquid by the regular beat of their flagellum. In the presence of a concentration gradient of a chemoattractant, they can steer upwards the concentration gradient, a process called chemotaxis.
openaire   +2 more sources

A contribution to the anatomy of two rare cetacean species: The hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica)

The Anatomical Record, EarlyView.
Abstract The anatomical description of the hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica) remains largely unexplored, due to limited specimen availability and preservation challenges. This study employed digital imaging techniques, conventional histology, and computed tomography to provide visualization of
Jean‐Marie Graïc, Tommaso Gerussi, Bruno Cozzi, Rebecca M. Boys, Brian Chin Wing Kot, Matthew R. Perrott, Kane Fleury, Tabris Yik To Chung, Henry Chun Lok Tsui, Emma Burns, Trudi Webster, Stuart Hunter, Emma L. Betty, Odette Howarth, Carolina Loch, Sophie White, Steve Dawson, William Rayment, Ros Cole, Derek Cox, Tom Waterhouse, Hannah Hendriks, Anton van Helden, Muriel Johnstone, Ramari Oliphant Stewart, R. Ewan Fordyce, Karen A. Stockin   +26 more
wiley   +1 more source

Early stages of tooth development in the harbor porpoise Phocoena phocoena

The Anatomical Record, EarlyView.
Abstract Here we describe the stages of tooth development in toothed whales on the basis of the harbor porpoise (Phocoena phocoena). The aim of the study was to find out whether these stages are identical to those of other mammals analyzed so far although toothed whales are homodont and monophyodont.
Lasse M. Mathes, Lennart Müller‐Thomsen, Stefan Huggenberger   +2 more
wiley   +1 more source

Sperm induction of somatic cell-cell fusion as a novel functional test

eLife
The fusion of mammalian gametes requires the interaction between IZUMO1 on the sperm and JUNO on the oocyte. We have recently shown that ectopic expression of mouse IZUMO1 induces cell-cell fusion and that sperm can fuse to fibroblasts expressing JUNO ...
Nicolas G Brukman, Clari Valansi, Benjamin Podbilewicz   +2 more
doaj   +1 more source

Actin remodeling driven by circLIMA1: sperm cell as an intriguing cellular model. [PDF]

Int J Biol Sci, 2022
Manfrevola F, Potenza N, Chioccarelli T, Di Palo A, Siniscalchi C, Porreca V, Scialla A, Mele VG, Petito G, Russo A, Lanni A, Senese R, Ricci G, Pierantoni R, Chianese R, Cobellis G.   +15 more
europepmc   +1 more source

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

The Anatomical Record, EarlyView.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti, Kenshu Shimada, João Paulo C. B. da Silva   +2 more
wiley   +1 more source