A method used in the diagnosis of Chagas’ Disease (South American Trypanosomiasis), in which vector reduviid bugs are allowed to suck the blood from patients suspected of having the infection. The insects are subsequently examined for the presence of trypanosomes in their gut to confirm infection.... xenodiagnosis
A genus of fleas infesting rats. The tropical rat flea, Xenopsylla cheopis and other species of the genus are major vectors of Bubonic Plague and murine typhus.... xenopsylla
TRANSPLANTATION of organs from one species to another – for example, from pigs to humans. The use of organs from appropriately cloned animals was seen as a possible solution to the shortage of human organs for transplantation; however, research has shown that rejection remains a problem and there is also an unresolved possibility that diseases might be transmitted across the species barrier. It seems likely that STEM CELL research will provide a more realistic source of tissues for transplantation to replace diseased organs in humans.... xenotrans plantation
n. a radioactive isotope that has a half-life of about five days and is used in ventilation scanning of the lungs in nuclear medicine (see ventilation-perfusion scanning). It gives off beta particles, which are responsible for the relatively high radiation dose compared to *krypton-81m. Symbol: Xe-133.... xenon-133
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