Background: Spermatozoa are able to sense an attractant molecule gradient and as a consequence, orient their movement towards the source of the attractant. This mechanism is known as sperm chemotaxis. In recent years, our laboratory contributed to the knowledge of several features of mammalian sperm chemotaxis. These include the size and physiological state of the chemotactic sperm population, ...

objective(s) motility plays a major role in pathogenicity of helicobacter pylori, yet there is  scarce data regarding its chemotactic behaviour. the present study was designed to investigate the chemotactic responses of local isolates of h. pylori towards various sugars, amino acids, as well as some other chemical substances. materials and methods chemotaxis was assayed by a modified adler’s me...

In this work, we rigorously study chemotaxis effect versus haptotaxis on boundedness, blow-up and asymptotical behavior of solutions for a chemotaxis-haptotaxis model in 2D settings. It is well-known that the corresponding Keller–Segel chemotaxis-only possesses striking feature critical mass blowup phenomenon, namely, subcritical ensures whereas, supercritical induces existence blow-ups. Herein...

in vitro culture systems using bone marrow cells from balb/c mice were set up in medium supplemented with spleen-derived medium. bone marrow cells grown in spleen-derived medium gave rise to cultures containing >97% mast cells. the cells were used in polarisation chemotaxis assays with the intention of determining the effect of nerve tissue-derived neurotransmitters on mast cell migration. some...

We consider a chemotaxis-Navier-Stokes system in two dimensional bounded domains. It is asserted that the chemotaxis admits time periodic solution under some conditions.

Abstract CD8+ T cells and NK are the primary line of defense against tumor cells. However, microenvironment impairs their anti-tumor capabilities. One key functions impaired is ability to infiltrate tumor, essential allow direct contact with a target cell its killing. Kv1.3 KCa3.1 K +channels have multitude that been established in cells: regulates cytotoxicity chemotaxis. less known about Here...

ABSTRACT RNA-seq analysis of Cupriavidus necator NH9, a 3-chlorobenzoate degradative bacterium, cultured with 3-chlorobenzaote and benzoate, revealed strong induction genes encoding enzymes in degradation pathways the respective compound, including to convert benzoate chlorocatechol catechol, respectively, ortho-cleavage pathway for conversion central metabolites. The transporters, components s...

OVERVIEW ..................................................................................................................... 649 FEATURES OF CHEMOTACTIC BEHAVIOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650 HOW DO CELLS ACCOMPLISH CHEMOTAXIS? .................................................