Down syndrome
Down syndrome or trisomy 21 (usually Down's Syndrome in British English
Characteristics
known as Brushfield spots
Individuals with Down syndrome may have some or all of the following physical characteristics: oblique eye fissures with epicanthic skin fold s on the inner corner of more
Chagas disease
Chagas' disease (also called American trypanosomiasis) is a human tropical parasitic disease which occurs in the Americas , particularly in South America . Its pathogen ic agent is a flagellate protozoa n named Trypanosoma cruzi , which is transmitted to humans and other mammal more
Charles Darwin
Charles Robert Darwin (12 February 1809 – 19 April 1882 ) was an English naturalist . After becoming eminent among scientists for his field work and inquiries into geology , he proposed and provided scientific evidence that all species of life have evolved over time f more
Helicobacter pylori
Helicobacter pylori () is a Gram-negative , microaerophilic , and acidophilic bacterium that infects various areas of the stomach and duodenum . Many cases of peptic ulcer s, gastritis , duodenitis , and perhaps some cancer s are caused by H. pylori infections. However, man more
Xenon
Xenon ( in the UK, in the US) is a chemical element that has the symbol Xe and atomic number 54. A colorless, heavy, odorless noble gas , xenon occurs in the earth's atmosphere in trace amounts. Although generally unreactive, xenon can undergo a few chemical reaction s such as the forma more