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Listeria Costaricensis
''Listeria costaricensis'' (cos.ta.ri.cen′sis N.L. fem. adj. costaricensis ‘from Costa Rica’, the country from where the type strain was isolated) is a species of bacterium of the genus ''Listeria''. It is a Gram-stain-positive, rod-shaped bacterium, non-spore-forming and facultatively anaerobic. Colonies are opaque, yellow-pigmented (atypical of Listeria species), with a flat shape and entire margin on BHI. Growth occurs at 22–42 °C, with optimal growth at 30–37 °C. It has motility at 37 °C. The bacteria is negative for catalase, haemolysis and nitrite reduction. It can be differentiated from other species of the genus Listeria by the absence of catalase reaction, production of acid from potassium 5-ketogluconate and production of a yellow pigment on BHI. It is presumably non-pathongenic due to the lack of haemolysis and pathogenicity genes on its genome. The species was isolated in August 2015 from the drainage system of a food-processing plant in the prov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Costa Rica
Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, the Pacific Ocean to the southwest, and Maritime boundary, maritime border with Ecuador to the south of Cocos Island. It has a population of around five million in a land area of . An estimated 333,980 people live in the capital and largest city, San José, Costa Rica, San José, with around two million people in the surrounding metropolitan area. The sovereign state is a Unitary state, unitary Presidential system, presidential Constitution of Costa Rica, constitutional republic. It has a long-standing and stable democracy and a highly educated workforce. The country spends roughly 6.9% of its budget (2016) on education, compared to a global average of 4.4%. Its economy, once heavily dependent on agricultu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pathogen
In biology, a pathogen ( el, πάθος, "suffering", "passion" and , "producer of") in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term ''pathogen'' came into use in the 1880s. Typically, the term ''pathogen'' is used to describe an ''infectious'' microorganism or agent, such as a virus, bacterium, protozoan, prion, viroid, or fungus. Small animals, such as helminths and insects, can also cause or transmit disease. However, these animals are usually referred to as parasites rather than pathogens. The scientific study of microscopic organisms, including microscopic pathogenic organisms, is called microbiology, while parasitology refers to the scientific study of parasites and the organisms that host them. There are several pathways through which pathogens can invade a host. The principal pathways have different episodic time frames, but soil has the longest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris
Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, fashion, gastronomy, and science. For its leading role in the arts and sciences, as well as its very early system of street lighting, in the 19th century it became known as "the City of Light". Like London, prior to the Second World War, it was also sometimes called the capital of the world. The City of Paris is the centre of the Île-de-France region, or Paris Region, with an estimated population of 12,262,544 in 2019, or about 19% of the population of France, making the region France's primate city. The Paris Region had a GDP of €739 billion ($743 billion) in 2019, which is the highest in Europe. According to the Economist Intelli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pasteur Institute
The Pasteur Institute (french: Institut Pasteur) is a French non-profit private foundation dedicated to the study of biology, micro-organisms, diseases, and vaccines. It is named after Louis Pasteur, who invented pasteurization and vaccines for anthrax and rabies. The institute was founded on 4 June 1887, and inaugurated on 14 November 1888. For over a century, the Institut Pasteur has researched infectious diseases. This worldwide biomedical research organization based in Paris was the first to isolate HIV, the virus that causes AIDS, in 1983. Over the years, it has been responsible for discoveries that have enabled medical science to control diseases such as diphtheria, tetanus, tuberculosis, poliomyelitis, influenza, yellow fever, and plague. Since 1908, ten Institut Pasteur scientists have been awarded the Nobel Prize for medicine and physiology—the 2008 Nobel Prize in Physiology or Medicine was shared between two Pasteur scientists. History The Institut Pasteur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cartago, Costa Rica
Cartago () is the head city of Cartago canton of the Cartago Province, and is composed of the Oriental and Occidental districts as stated in the administrative divisions of Costa Rica. It was the capital of Costa Rica from 1574 to 1824. History Founded in 1563 by Juan Vasquez de Coronado, it was the first successful establishment in Costa Rica. The city was granted a coat of arms by King Philip II of Spain in 1565, and the title of Muy Noble y Muy Leal ("Very Noble and Very Loyal") by the Cortes (Spanish Parliament) in 1814. It served as the first capital of Costa Rica until 1823, when Republican leader Gregorio José Ramírez, moved the capital to the bigger city of San José, because Cartago wanted to unite the newly independent province of Costa Rica to the Iturbide's Mexican Empire while San Jose and Alajuela supported a Republican system. The city was severely damaged by major earthquakes in 1822, 1841 and 1910. In 1963, a volcanic eruption of Irazu Volcano which for tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Costa Rica Institute Of Technology
The Costa Rica Institute of Technology (TEC) ( es, Tecnológico de Costa Rica) is a university in Costa Rica specializing in engineering and advanced science and research, modeled as an institute of technology. Its main campus is located in the Dulce Nombre district of Cartago canton in the Cartago Province of Costa Rica, east of the capital San José. The TEC is a national autonomous institution of higher education, dedicated to teaching, research and extension in technology and associated sciences. It was created by Law No. 4777 on 10 June 1971. The TEC offers undergraduate and graduate studies in fields including engineering (construction, industrial production, electronics, industrial maintenance, biotechnology, mechatronics, computers), computer science and business management. History Establishment Rafael Ángel González Chaves a public school teacher from San Ramón was one of the first proponents of creating an institute of technology in the country. During th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alajuela Province
Alajuela () is a province of Costa Rica. It is located in the north-central part of the country, bordering Nicaragua to the north. It also borders the provinces of Heredia to the east, San José to the south, Puntarenas to the southwest and Guanacaste to the west. As of 2011, the province had a population of 885,571. Alajuela is composed of 16 cantons, which are divided into 111 districts. It covers an area of 9,757.53 square kilometers. The provincial capital is Alajuela. Other large cities include Quesada, Aguas Zarcas, Naranjo, Zarcero, Orotina, Sarchí Norte, Upala, San Ramón, Grecia and Los Chiles. Provincial history Pre-Columbia and the arrival of the Spanish Costa Rica has been inhabited for nearly 10,000 years, but little is known of its pre-Columbian history. Alajuela was occupied by several indigenous groups just before the arrival of the Spanish. Despite being between two major civilizations, indigenous groups sparsely populated the area.undefinedISLS: Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genome
In the fields of molecular biology and genetics, a genome is all the genetic information of an organism. It consists of nucleotide sequences of DNA (or RNA in RNA viruses). The nuclear genome includes protein-coding genes and non-coding genes, other functional regions of the genome such as regulatory sequences (see non-coding DNA), and often a substantial fraction of 'junk' DNA with no evident function. Almost all eukaryotes have mitochondria and a small mitochondrial genome. Algae and plants also contain chloroplasts with a chloroplast genome. The study of the genome is called genomics. The genomes of many organisms have been sequenced and various regions have been annotated. The International Human Genome Project reported the sequence of the genome for ''Homo sapiens'' in 200The Human Genome Project although the initial "finished" sequence was missing 8% of the genome consisting mostly of repetitive sequences. With advancements in technology that could handle sequenci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gene
In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a basic unit of heredity and the molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protein-coding genes and noncoding genes. During gene expression, the DNA is first copied into RNA. The RNA can be directly functional or be the intermediate template for a protein that performs a function. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits. These genes make up different DNA sequences called genotypes. Genotypes along with environmental and developmental factors determine what the phenotypes will be. Most biological traits are under the influence of polygenes (many different genes) as well as gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemolysis
Hemolysis or haemolysis (), also known by several other names, is the rupturing (lysis) of red blood cells (erythrocytes) and the release of their contents (cytoplasm) into surrounding fluid (e.g. blood plasma). Hemolysis may occur in vivo or in vitro. One cause of hemolysis is the action of hemolysins, toxins that are produced by certain pathogenic bacteria or fungi. Another cause is intense physical exercise. Hemolysins damage the red blood cell's cytoplasmic membrane, causing lysis and eventually cell death. Etymology From hemo- + -lysis, from , "blood") + , "loosening"). Inside the body Hemolysis inside the body can be caused by a large number of medical conditions, including some parasites (''e.g.'', ''Plasmodium''), some autoimmune disorders (''e.g.'', autoimmune haemolytic anaemia, drug-induced hemolytic anemia, atypical hemolytic uremic syndrome (aHUS)), some genetic disorders (''e.g.'', Sickle-cell disease or G6PD deficiency), or blood with too low a solute conc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacteria
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic relationsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalase
Catalase is a common enzyme found in nearly all living organisms exposed to oxygen (such as bacteria, plants, and animals) which catalyzes the decomposition of hydrogen peroxide to water and oxygen. It is a very important enzyme in protecting the cell from oxidative damage by reactive oxygen species (ROS). Catalase has one of the highest turnover numbers of all enzymes; one catalase molecule can convert millions of hydrogen peroxide molecules to water and oxygen each second. Catalase is a tetramer of four polypeptide chains, each over 500 amino acids long. It contains four iron-containing heme groups that allow the enzyme to react with hydrogen peroxide. The optimum pH for human catalase is approximately 7, and has a fairly broad maximum: the rate of reaction does not change appreciably between pH 6.8 and 7.5. The pH optimum for other catalases varies between 4 and 11 depending on the species. The optimum temperature also varies by species. Structure Human catalase forms a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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