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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.
"My Country, 'Tis of Thee", also known as simply "America", is an American patriotic song, the lyrics of which were written by Samuel Francis Smith. [2] The song served as one of the de facto national anthems of the United States (along with songs like "Hail, Columbia") before the adoption of "The Star-Spangled Banner" as the official U.S. national anthem in 1931. [3]
According to the Guinness World Records, this is the world's most poisonous common plant. [22] If ricin is ingested, symptoms commonly begin within two to four hours, but may be delayed by up to 36 hours. These include a burning sensation in mouth and throat, abdominal pain, purging and bloody diarrhea.
In England though, the song has become well known as England’s rugby anthem, with fans happy to sing it at every Twickenham Test as well as at away games around the world.
Suzannah Clark, a music professor at Harvard, connected the piece's resurgence in popularity to the harmonic structure, a common pattern similar to the romanesca.The harmonies are complex, but combine into a pattern that is easily understood by the listener with the help of the canon format, a style in which the melody is staggered across multiple voices (as in "Three Blind Mice"). [1]
From the late sixteenth century in England and Scotland, when most people were not musically literate and learned melodies by rote, it was a common practice to sing a new text to a hymn tune the singers already knew which had a suitable meter and character.
This list contains musical instruments of symbolic or cultural importance within a nation, state, ethnicity, tribe or other group of people.. In some cases, national instruments remain in wide use within the nation (such as the Puerto Rican cuatro), but in others, their importance is primarily symbolic (such as the Welsh triple harp).
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]