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Positive chemotaxis occurs if the movement is toward a higher concentration of the chemical in question; negative chemotaxis if the movement is in the opposite direction. Chemically prompted kinesis (randomly directed or nondirectional) can be called chemokinesis.
Chemotaxis assays are experimental tools for evaluation of chemotactic ability of prokaryotic or eukaryotic cells. A wide variety of techniques have been developed. A wide variety of techniques have been developed.
Chemotaxis also plays an essential role in several diseases, such as tumor metastasis, the recruitment of T-lymphocytes during inflammation, and HIV-1 entry into T cells. [6] [9] [10] At the core of chemotaxis are specialized sensory cells called chemoreceptors. These cells allow an organism to detect chemical molecules within its environment ...
Of the two directional varieties of chemotaxis, chemoattraction has been studied to a much greater extent. Only recently have the key components of the chemorepulsive pathway been elucidated. [ 1 ] The exact mechanism is still being investigated, and its constituents are currently being explored as likely candidates for immunotherapies.
Recent results proved that chemokines (e.g. IL-8, RANTES) are working on long-term chemotaxis receptors, while vasoactive peptides (e.g. endothelin) act more on the short-term ones. Term chemotactic selection is also used to design a technique which separates eukaryotic or prokaryotic cells upon their chemotactic responsiveness to selector ligands.
Ahead of the Super Bowl LIX rematch between the Kansas City Chiefs and Philadelphia Eagles on Sunday, former New Orleans Saints quarterback Drew Brees is weighing in on both teams' chances of victory.
Police in Thailand have detained the British husband of Lamduan Armitage, the Thai woman whose body was found in the Yorkshire Dales more than 20 years ago. Walkers discovered her half-naked body ...
N-Formylmethionyl-leucyl-phenylalanine (fMLF, fMLP or N-formyl-met-leu-phe) is an N-formylated tripeptide and sometimes simply referred to as chemotactic peptide is a potent polymorphonuclear leukocyte (PMN) chemotactic factor and is also a macrophage activator.