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Cryoprecipitate should not be used to treat haemophilia, von Willebrand’s disease or deficiencies of Factor XIII or fibronectin except in cases where alternative therapies are unavailable. A typical adult dose is 10 units of whole blood-derived cryoprecipitate, equivalent to a fibrinogen dose of approximately 3−4 g.
Plant cryopreservation is a genetic resource conservation strategy that allows plant material, such as seeds, pollen, shoot tips or dormant buds to be stored indefinitely in liquid nitrogen. [1] After thawing, these genetic resources can be regenerated into plants and used on the field.
The term cryosupernatant (also called cryo-poor plasma, cryoprecipitate depleted, cryoprecipitate reduced plasma) refers to plasma from which the cryoprecipitate has been removed. It is used to treat thrombocytopenic purpura .
A cryoprotectant is a substance used to protect biological tissue from freezing damage (i.e. that due to ice formation). Arctic and Antarctic insects, fish and amphibians create cryoprotectants (antifreeze compounds and antifreeze proteins) in their bodies to minimize freezing damage during cold winter periods.
Maize (Zea mays, Poaceae) is the most widely cultivated C 4 plant.[1]In botany, C 4 carbon fixation is one of three known methods of photosynthesis used by plants. C 4 plants increase their photosynthetic efficiency by reducing or suppressing photorespiration, which mainly occurs under low atmospheric CO 2 concentration, high light, high temperature, drought, and salinity.
The main techniques used for embryo cryopreservation are vitrification versus slow programmable freezing (SPF). Studies indicate that vitrification is superior or equal to SPF in terms of survival and implantation rates. [2] Vitrification appears to result in decreased risk of DNA damage than slow freezing. [3]
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The synthesis of fluoroacetate in several plants is an example of the use of small molecules to disrupt the metabolism of herbivores, in this case the citric acid cycle. [51] Plants interact by producing allelochemicals which interfere with the growth of other plants (allelopathy). These have a role in plant defense and may be used to suppress ...
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