Scegli la categoria

  • Anatomia 168 domande A branch of biology dealing with the structure of organisms.
  • Organismi 49 domande Any living biological entity, such as an animal, plant, fungus, or bacterium.
    • Eukaryota 15 domande One of the three domains of life (the others being BACTERIA and ARCHAEA), also called Eukarya. These are organisms whose cells are enclosed in membranes and possess a nucleus. They comprise almost all multicellular and many unicellular organisms, and are traditionally divided into groups (sometimes called kingdoms) including ANIMALS; PLANTS; FUNGI; and various algae and other taxa that were previously part of the old kingdom Protista.
    • Archaea 0 domande One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered separate and distinct. They are characterized by: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls; (3) the presence of ether-linked lipids built from branched-chain subunits; and (4) their occurrence in unusual habitats. While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication. The domain contains at least four kingdoms: CRENARCHAEOTA; EURYARCHAEOTA; NANOARCHAEOTA; and KORARCHAEOTA.
    • Batteri 27 domande One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE
      • Acidobacteria 0 domande A physiologically diverse phylum of acidophilic, gram-negative bacteria found in a wide variety of habitats, but particularly abundant in soils and sediments.
      • Agricultural Inoculants 0 domande Beneficial microorganisms (bacteria or fungi) encapsulated in carrier material and applied to the environment for remediation and enhancement of agricultural productivity.
      • Forme Atipiche Di Batteri 0 domande Microorganisms that have undergone greater changes than normal in morphology, physiology, or cultural characteristics.
      • Batteri Aerobi 0 domande
      • Batteri Anaerobi 0 domande
      • Bacteroidetes 0 domande A phylum of bacteria comprised of three classes: Bacteroides, Flavobacteria, and Sphingobacteria.
      • Agenti Patogeni Presenti Nel Sangue 0 domande Infectious organisms in the BLOOD, of which the predominant medical interest is their contamination of blood-soiled linens, towels, gowns, BANDAGES, other items from individuals in risk categories, NEEDLES and other sharp objects, MEDICAL WASTE and DENTAL WASTE, all of which health workers are exposed to. This concept is differentiated from the clinical conditions of BACTEREMIA; VIREMIA; and FUNGEMIA where the organism is present in the blood of a patient as the result of a natural infectious process.
      • Chlorobi 0 domande A phylum of anoxygenic, phototrophic bacteria including the family Chlorobiaceae. They occur in aquatic sediments, sulfur springs, and hot springs and utilize reduced sulfur compounds instead of oxygen.
      • Cloroflessi 0 domande Phylum of green nonsulfur bacteria including the family Chloroflexaceae, among others.
      • Cyanobacteria 0 domande A phylum of oxygenic photosynthetic bacteria comprised of unicellular to multicellular bacteria possessing CHLOROPHYLL a and carrying out oxygenic PHOTOSYNTHESIS. Cyanobacteria are the only known organisms capable of fixing both CARBON DIOXIDE (in the presence of light) and NITROGEN. Cell morphology can include nitrogen-fixing heterocysts and/or resting cells called akinetes. Formerly called blue-green algae, cyanobacteria were traditionally treated as ALGAE.
      • Batteri Che Producono Endospore 2 domande A group of rods or cocci whose taxonomic affinities are uncertain. They form endospores, thick-walled bodies formed within the vegetative cells of certain bacteria, able to withstand adverse environmental conditions for prolonged periods.
      • Fibrobacteres 0 domande A phylum of gram-negative bacteria closely related to the BACTEROIDETES. Species have been found in the gastrointestinal tracts of animals, especially termites, though indications are that species are more broadly distributed in other environments.
      • Fusobatteri 0 domande A phylum of anaerobic, gram-negative bacteria with a chemoorganotrophic heterotrophic metabolism. They are resident flora of the OROPHARYNX.
      • Batteri Gram-Negativi 12 domande Bacteria which lose crystal violet stain but are stained pink when treated by Gram's method.
      • Batteri Gram-Positivi 12 domande Bacteria which retain the crystal violet stain when treated by Gram's method.
        • Actinobacteria 0 domande Class of BACTERIA with diverse morphological properties. Strains of Actinobacteria show greater than 80% 16S rDNA/rRNA sequence similarity among each other and also the presence of certain signature nucleotides. (Stackebrandt E. et al, Int. J. Syst. Bacteriol. (1997) 47:479-491)
        • Bacillales 0 domande An order of GRAM-POSITIVE BACTERIA in the class Bacilli, phylum Firmacutes.
        • Cocchi Gram-Positivi 3 domande Coccus-shaped bacteria that retain the crystal violet stain when treated by Gram's method.
          • Aerococcus 0 domande A genus of gram-positive cocci in the family AEROCOCCACEAE, occurring as airborne saprophytes.
          • Deinococcus 0 domande A genus of gram-positive aerobic cocci found in the soil, that is highly resistant to radiation, especially ionizing radiation (RADIATION, IONIZING). Deinococcus radiodurans is the type species.
          • Micrococcaceae 0 domande A family of bacteria ranging from free living and saprophytic to parasitic and pathogenic forms.
          • Oenococcus 0 domande A genus of GRAM-POSITIVE COCCI in the family LEUCONOSTOCACEAE. It is the primary bacteria involved in carrying out malolactic conversion in winemaking.
          • Peptococcaceae 0 domande A family of bacteria found in the mouth and intestinal and respiratory tracts of man and other animals as well as in the human female urogenital tract. Its organisms are also found in soil and on cereal grains.
          • Peptostreptococcus 0 domande A genus of gram-positive, anaerobic, coccoid bacteria that is part of the normal flora of humans. Its organisms are opportunistic pathogens causing bacteremias and soft tissue infections.
          • Planococcaceae 0 domande A family of gram-positive bacteria in the order BACILLALES. Most are strict aerobic heterotrophs.
          • Ruminococcus 0 domande A genus of gram-positive bacteria in the family Lachnospiraceae that inhabits the RUMEN; LARGE INTESTINE; and CECUM of MAMMALS.
          • Sarcina 0 domande A genus of gram-positive, anaerobic bacteria whose organisms divide in three perpendicular planes and occur in packets of eight or more cells. It has been isolated from soil, grains, and clinical specimens.
          • Staphylococcaceae 0 domande Family of gram-positive, facultatively anaerobic bacteria, in the order Bacillales. Genera include Gemella, Macrococcus, Salinicoccus, and STAPHYLOCOCCUS.
          • Streptococcaceae 3 domande A family of gram-positive non-sporing bacteria including many parasitic, pathogenic, and saprophytic forms.
            • Lactococcus 0 domande A genus of gram-positive, coccoid bacteria mainly isolated from milk and milk products. These bacteria are also found in plants and nonsterile frozen and dry foods. Previously thought to be a member of the genus STREPTOCOCCUS (group N), it is now recognized as a separate genus.
            • Streptococcus 3 domande A genus of gram-positive, coccoid bacteria whose organisms occur in pairs or chains. No endospores are produced. Many species exist as commensals or parasites on man or animals with some being highly pathogenic. A few species are saprophytes and occur in the natural environment.
              • Streptococcus Agalactiae 3 domande A bacterium which causes mastitis in cattle and occasionally in man.
              • Streptococcus Bovis 0 domande A species of gram-positive, coccoid bacteria commonly found in the alimentary tract of cows, sheep, and other ruminants. It occasionally is encountered in cases of human endocarditis. This species is nonhemolytic.
              • Streptococcus Equi 0 domande A species of gram-positive, coccoid bacteria isolated from abscesses in submaxillary glands and mucopurulent discharges of the upper respiratory tract of horses. This organism belongs to Group C streptococci with regards to antigen response and is known to cause strangles. The subspecies S. zooepidemicus is also considered a pathogen of horses.
              • Streptococcus gordonii 0 domande A species of gram-positive, facultatively anaerobic bacteria in the family STREPTOCOCCACEAE. It is a normal inhabitant of the human oral cavity, and causes DENTAL PLAQUE and ENDOCARDITIS. It is being investigated as a vehicle for vaccine delivery.
              • Streptococcus Pneumoniae 0 domande A gram-positive organism found in the upper respiratory tract, inflammatory exudates, and various body fluids of normal and/or diseased humans and, rarely, domestic animals.
              • Streptococcus Pyogenes 0 domande A species of gram-positive, coccoid bacteria isolated from skin lesions, blood, inflammatory exudates, and the upper respiratory tract of humans. It is a group A hemolytic Streptococcus that can cause SCARLET FEVER and RHEUMATIC FEVER.
              • Streptococcus Suis 0 domande A species of STREPTOCOCCUS isolated from pigs. It is a pathogen of swine but rarely occurs in humans.
              • Streptococcus Thermophilus 0 domande A species of thermophilic, gram-positive bacteria found in MILK and milk products.
              • Viridans Streptococci 0 domande A large heterogeneous group of mostly alpha-hemolytic streptococci. They colonize the respiratory tract at birth and generally have a low degree of pathogenicity. This group of species includes STREPTOCOCCUS MITIS; STREPTOCOCCUS MUTANS; STREPTOCOCCUS ORALIS; STREPTOCOCCUS SANGUIS; STREPTOCOCCUS SOBRINUS; and the STREPTOCOCCUS MILLERI GROUP. The latter are often beta-hemolytic and commonly produce invasive pyogenic infections including brain and abdominal abscesses.
                • Gruppo Dello Streptococcus Milleri 0 domande A subset of VIRIDANS STREPTOCOCCI, but the species in this group differ in their hemolytic pattern and diseases caused. These species are often beta-hemolytic and produce pyogenic infections.
                  • Streptococcus Anginosus 0 domande A species of gram-positive bacteria in the STREPTOCOCCUS MILLERI GROUP. It is the most frequently seen isolate of that group, has a proclivity for abscess formation, and is most often isolated from the blood, gastrointestinal, and urogenital tract.
                  • Streptococcus Constellatus 0 domande A species of gram-positive bacteria in the STREPTOCOCCUS MILLERI GROUP. It is commonly found in the oropharnyx flora and has a proclivity for abscess formation in the upper body and respiratory tract.
                  • Streptococcus Intermedius 0 domande A species of gram-positive bacteria in the STREPTOCOCCUS MILLERI GROUP. It is commonly found in the oropharynx flora and has a proclivity for abscess formation, most characteristically in the CENTRAL NERVOUS SYSTEM and LIVER.
                • Streptococcus Mitis 0 domande A species of gram-positive, coccoid bacteria commensal in the respiratory tract.
                • Streptococcus Mutans 0 domande A polysaccharide-producing species of STREPTOCOCCUS isolated from human dental plaque.
                • Streptococcus Oralis 0 domande A species of gram-positive, coccoid bacteria that is numerous in the mouth and throat. It is a common cause of endocarditis and is also implicated in dental plaque formation.
                • Streptococcus Sanguis 0 domande A gram-positive organism found in dental plaque, in blood, on heart valves in subacute endocarditis, and infrequently in saliva and throat specimens. L-forms are associated with recurrent aphthous stomatitis.
                • Streptococcus Sobrinus 0 domande A species of gram-positive, coccoid bacteria isolated from the human tooth surface. Strains have been shown to be cariogenic in experimental animals and may be associated with human dental caries.
        • Batteri Gram-Positivi Che Producono Endospore 0 domande Bacteria that form endospores and are gram-positive. Representative genera include BACILLUS; CLOSTRIDIUM; MICROMONOSPORA; SACCHAROPOLYSPORA; and STREPTOMYCES.
        • Bastoncelli Gram-Positivi 0 domande A large group of rod-shaped bacteria that retains the crystal violet stain when treated by Gram's method.
        • Lactobacillales 9 domande An order of GRAM-POSITIVE BACTERIA in the class Bacilli, that have the ability to ferment sugars to lactic acid. They are widespread in nature and commonly used to produce fermented foods.
      • Planctomycetales 0 domande A phylum of gram-negative bacteria whose members are found in a variety of water habitats as well as animal tissues.
      • Proteobacteria 0 domande A phylum of bacteria consisting of the purple bacteria and their relatives which form a branch of the eubacterial tree. This group of predominantly gram-negative bacteria is classified based on homology of equivalent nucleotide sequences of 16S ribosomal RNA or by hybridization of ribosomal RNA or DNA with 16S and 23S ribosomal RNA.
      • Spirochaetales 0 domande An order of slender, flexuous, helically coiled bacteria, with one or more complete turns in the helix.
      • Batteri Riduttori Di Zolfo 0 domande A group of gram-negative, anaerobic bacteria that is able to oxidize acetate completely to carbon dioxide using elemental sulfur as the electron acceptor.
      • Verrucomicrobia 0 domande A phylum of gram-negative bacteria containing seven class-level groups from a wide variety of environments. Most members are chemoheterotrophs.
    • Virus 1 quesito Minute infectious agents whose genomes are composed of DNA or RNA, but not both. They are characterized by a lack of independent metabolism and the inability to replicate outside living host cells.
    • Organism Forms 1 quesito Specific states or life cycle stages of organisms. These include post-embryonic stages of insects, symbiotic relationships between organisms, and reproductive elements such as spores.
  • Malattie 323 domande Any impairment of normal physiological function affecting all or part of an organism, esp a specific pathological change caused by infection, stress, etc, producing characteristic symptoms; illness or sickness in general.
  • Sostanze chimiche e Farmaci 202 domande Any substance used in or resulting from a reaction involving changes to atoms or molecules, especially one derived artificially for practical use and any synthetic, semisynthetic, or natural chemical substance used in the treatment, prevention, or diagnosis of disease, or for other medical reasons.
  • Tecniche ed apparecchiature analitiche, diagnostiche e terapeutiche 109 domande
  • Psichiatria e Psicologia 14 domande The branches of medicine concerned with the diagnosis and treatment of mental illness and the scientific study of all forms of human and animal behaviour, sometimes concerned with the methods through which behaviour can be modified.
  • Scienze biologiche 31 domande
  • Scienze naturali 17 domande
  • Antropologia, Formazione, Sociologia e fenomeni sociali 3 domande
  • Tecnologia, Industria, Agricoltura 4 domande
  • Discipline umanistiche 0 domande The study of literature, philosophy, and the arts.
  • Scienza dell'informazione 0 domande The field of knowledge, theory, and technology dealing with the collection of facts and figures, and the processes and methods involved in their manipulation, storage, dissemination, publication, and retrieval. It includes the fields of COMMUNICATION; PUBLISHING; LIBRARY SCIENCE; and informatics.
  • Gruppi di persone 8 domande
  • Assistenza sanitaria 34 domande
  • Caratteristiche della Pubblicazione 4 domande
  • Luoghi geografici 7 domande The study of the natural features of the earth's surface, including topography, climate, soil, vegetation, etc, and man's response to them.
crea domanda:
Benvenuti a lookformedical.com, dove si possono porre domande e ricevere risposte da altri membri della comunità.
Limitazione di responsabilità: Non valuta né garantisce l'accuratezza dei contenuti di questo sito web.
...