Results 61 to 70 of about 273,320 (297)
Advanced Functional Materials, EarlyView.This study reports a microfluidic device with a functionalized surface utilizing a polyoxazoline coating and covalently immobilized gold nanoparticles and anti‐phosphatidylserine antibody. The device efficiently eliminates pre‐apoptotic and apoptotic spermatozoa and yields sperm with substantially improved quality and low DNA damage, offering a simple ...
Soraya Rasi Ghaemi +5 more
wiley +1 more source
Behavior of Male Gamete Fusogen GCS1/HAP2 and the Regulation in Arabidopsis Double Fertilization
Biomolecules, 2023 In the sexual reproduction of flowering plants, two independent fertilization events occur almost simultaneously: two identical sperm cells fuse with either the egg cell or the central cell, resulting in embryo and endosperm development to produce a seed.
Yuka Shiba +7 more
doaj +1 more source
Single-cell Motility Analysis of Tethered Human Spermatozoa. [PDF]
, 2019 Vigorous sperm flagellar motility is essential for fertilization, and so the quantitative measurement of motility is a useful tool to assess the intrinsic fertility potential of sperm cells and explore how various factors can alter sperm's ability to ...
Lishko, Polina V +3 more
core
Nanodiamond Quantum Sensors for Probing Free Radical Biology
Advanced Functional Materials, EarlyView.Free radicals play key roles in cellular signaling and disease but remain difficult to measure in living systems. Nanodiamonds (NDs) with nitrogen‐vacancy (NV) centers enable quantum sensing of local magnetic noise via T₁ relaxometry, providing nondestructive radical detection in living cells.
Qi Lu, Yingke Wu, Tanja Weil
wiley +1 more source
Automatic detection of spermatozoa for laser capture microdissection [PDF]
, 2008 In sexual assault crimes, differential extraction of spermatozoa from vaginal swab smears is often ineffective, especially when only a few spermatozoa are present in an overwhelming amount of epithelial cells.
Deforce, Dieter +3 more
core +2 more sources
Advanced Healthcare Materials, EarlyView.An in vitro testicular model is developed by generating connective tissue equivalents from human dermal fibroblast‐derived microtissues and coupling them with human Sertoli cells or human Sertoli cell spheroids. This engineered microenvironment supports Sertoli cell maturation and functionality, providing a promising platform for studying human ...
Annachiara Scalzone +4 more
wiley +1 more source
Relation of the male gametes with embryo sec cells. The hypothesis of double fertilization
Acta Societatis Botanicorum Poloniae, 2014 The sperms one after another get out of synergids. The front sperm gets the first into the egg cell attraction zone and then the sperm comes into contact with egg membrane.
N. S. Belayeva
doaj +1 more source
Protein-carbohydrate interactions during fertilization [PDF]
, 1998 Interaction between gametes during fertilization is at least in part regulated by carbohydrate moieties of the zona pellucida (ZP) and carbohydrate binding proteins of the sperm surface. This review focuses on the protein-carbohydrate interactions during
Kolle, S., Plendl, J., Sinowatz, Fred
core +1 more source
Actin in Ejaculated Human Sperm Cells [PDF]
Biology of Reproduction, 1985 Previous studies have identified an "actin-like" protein in human sperm by indirect immunofluorescence microscopy with various probes, but no real biochemical confirmation of actin was made. In this study, two-dimensional (2-D) gels of Nonidet P-40 (NP-40) extracts of purified human sperm cells revealed a protein with appropriate pI and molecular ...
D, Ochs, D P, Wolf
openaire +2 more sources
Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine
Advanced Materials, EarlyView.A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen +5 more
wiley +1 more source