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John Langdon Down. John Langdon Haydon Down (18 November 1828 – 7 October 1896) was a British physician best known for his description of the genetic condition now known as Down syndrome, which he originally classified in 1862. He is also noted for his work in social medicine and as a pioneer in the care of mentally disabled patients.
Trisomy 21. Down syndrome (also known by the karyotype 47,XX,+21 for females and 47,XY,+21 for males) [98] is mostly caused by a failure of the 21st chromosome to separate during egg or sperm development, known as nondisjunction. [91] As a result, a sperm or egg cell is produced with an extra copy of chromosome 21; this cell thus has 24 ...
Contents. Mapuche. The Mapuche (/ məˈpuːtʃi / mə-POO-chee, [ 3 ]Mapuche and Spanish: [maˈputʃe]) are a group of indigenous inhabitants of south-central Chile and southwestern Argentina, including parts of Patagonia. The collective term refers to a wide-ranging ethnicity composed of various groups who share a common social, religious, and ...
Jérôme Jean Louis Marie Lejeune (13 June 1926 – 3 April 1994) was a French pediatrician and geneticist, best known for his work on the link of diseases to chromosome abnormalities, most especially the link between Down Syndrome and trisomy-21 and cri du chat syndrome, amongst several others, and for his subsequent strong opposition to the improper and immoral use of amniocentesis prenatal ...
Replica of a Diaguita ceramic bowl from northern Chile. Ricardo E. Latcham's theory posits Mapuches intruded from the east into the southern Diaguita lands.. A hypothesis put forward by Ricardo E. Latcham, and later expanded by Francisco Antonio Encina, theorizes that the Mapuche migrated to present-day Chile from the Pampas east of the Andes. [1]
View of a modern reconstruction of the Fort of Purén built during the occupation.. The Occupation of Araucanía or Pacification of Araucanía (1861–1883) was a series of military campaigns, agreements and penetrations by the Chilean army and settlers into Mapuche territory which led to the incorporation of Araucanía into Chilean national territory.
The Huilliche are the principal indigenous people of those regions. [6] According to Ricardo E. Latcham the term Huilliche started to be used in Spanish after the second founding of Valdivia in 1645, adopting the usage of the Mapuches of Araucanía for the southern Mapuche tribes. [2] Huilliche means 'southerners' (Mapudungun willi 'south' and ...
Common mosquito repellents that people apply on their skin have either DEET or picaridin, Yancey says. Also consider treating clothing with 0.5% permethrin to help ward away mosquitos especially ...