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Ricin (/ ˈ r aɪ s ɪ n / RY-sin) is a lectin (a carbohydrate-binding protein) and a highly potent toxin produced in the seeds of the castor oil plant, Ricinus communis.The median lethal dose (LD 50) of ricin for mice is around 22 micrograms per kilogram of body weight via intraperitoneal injection.
It can serve as a biomarker of ricin poisoning. [3] [4] It was first isolated from the castor seeds by Tuson in 1864. [5] [6] Ricinine has insecticidal effects. [7] It sublimes between 170 and 180 °C at 20 mmHg. It does not form salts, and is precipitated in iodine or mercuric chloride solutions, but not in Mayer's reagent. [5]
Ricinus communis, the castor bean [1] or castor oil plant, [2] is a species of perennial flowering plant in the spurge family, Euphorbiaceae.It is the sole species in the monotypic genus, Ricinus, and subtribe, Ricininae.
Roblox occasionally hosts real-life and virtual events. They have in the past hosted events such as BloxCon, which was a convention for ordinary players on the platform. [46] Roblox operates annual Easter egg hunts [52] and also hosts an annual event called the "Bloxy Awards", an awards ceremony that also functions as a fundraiser. The 2020 ...
*Stock Advisor returns as of July 15, 2024. Lawrence Nga has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Roblox. The Motley Fool has a disclosure ...
Whether your kid is asking if they can "buy more Robux" or begging you to check out their avatar's latest outfit, there's one thing most parents of kids who play Roblox have in common: We don't ...
Roblox Corporation has been ranked on Pocket Gamer.biz ' s top lists of mobile game developers, placing sixth in 2018, [30] eighth in 2019, [31] and sixth in 2020. [32] Fortune featured it as one of the best small and medium-sized workplaces in the San Francisco Bay Area, placing it sixteenth in 2019 and fortieth in 2021.
On July 29, 2015, 31-year-old Mohammed Ali from Liverpool, England was convicted at the Old Bailey of attempting to possess a chemical weapon. In January 2015, Ali had attempted to buy 500 mg of ricin on the dark web , but he had been in contact with an FBI agent and was sent a harmless powder.