chemical compositionMAMMALIAN sperm have been reported by various workers to contain no nucleoprotamine or nucleo-histone extractable by the usual means (with water or neutral salt solutions) 1 . This has been confirmed in the case of the bull, man, dog, boar and ram, but basic protein and ...
Chemical composition and protein source in the capacitation medium significantly affect the ability of human spermatozoa to undergo follicular fluid induced acrosome reaction. Hum Reprod 8:575-580.Calvo L, Dennison-Lagos L, Banks SM, et al: Chemical composition and protein source in the capa...
A chemical composition and vaginal sponge for introduction into the vaginal canal. The chemical composition has spermidicidal, bactericidal and virucidal activity, and when introduced into the vaginal canal, e.g. by a vaginal sponge, reduces or prevents the transmission of sexually transmitted ...
DNA G-quadruplexes (G4s) are non-canonical, four-stranded nucleic acid structures that comprise stacked G-tetrads within certain G-rich sequences (Fig.1a)14,15. DNA G4s have been shown to exist in human cells16,17,18, and their formation is dynamic in live cells19. G4 sequencing (G...
The BSP1-induced lipid extraction was characterized for a variety of membrane model systems composed of different binary mixtures for which the chemical composition, as well as the physical properties, was modulated. Since choline phosphoglycerides are the most abundant lipid species in bull sperm ...
97, though evidence that this occurs also remains limited108. Unfortunately, a poor understanding of the specific chemical structures of chemical signals in most animals limits broad inferences about the link between their molecular composition and the mechanisms of sexual selection that act upon them...
SAP-I is a sea urchin egg peptide that regulates sperm motility and also stimulates sperm mitochondrial metabolism. SAP-I is a peptide composed of 10 amino acids. Purity (HPLC) ≥98.0% Single impurity≤2% Peptide content≥75.0% Amino Acid Composition≤±15% Bacterial Endotoxins≤50EU/mg Solubil...
Herpetospermum caudigerum Wall Hyperuricemia Acute-gouty arthritis Inflammatory factors Chemical composition 1. Introduction People's material living conditions have substantially increased in recent decades, and meals rich in protein, fat, purine, and sugar are becoming increasingly frequent, which is on...
Chemical energy is converted into heat during the combustion process — an exothermal chemical reaction that requires a supply of oxygen and produces waste. The efficiency of the process depends on many factors, for example: • Composition of the burnable material that defines which part of the...
Ambient fine particulate matter (PM2.5) is a significant environmental and public health concern. Chemical concentrations and toxicity of PM2.5 vary depend