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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.
Electrochemotherapy is the combined treatment in which injection of a chemotherapeutic drug is followed by application of high-voltage electric pulses locally to the tumor. The treatment enables the chemotherapeutic drugs, which otherwise cannot or hardly go through the membrane of cells (such as bleomycin and cisplatin), to enter the cancer cells.
Six more current or former tennis players linked to a match-fixing syndicate in Belgium were given suspensions of varying lengths — one was barred for 15 years — and fined, the International ...
If cultures are positive or symptoms do not resolve after three months of treatment, it is necessary to re-evaluate the patient for drug-resistant disease or nonadherence to drug regimen. If cultures do not convert to negative despite three months of therapy, some physicians may consider admitting the patient to hospital so as to closely ...
Tina Fey still thinks about her wardrobe malfunction from over a decade ago — and how she found out about it!. While speaking on stage at the 2025 Next on Netflix Special Presentation held in ...