雅虎香港 搜尋

搜尋結果

  1. Coley's toxins (also called Coley's toxin, Coley's vaccine, Coley vaccine, Coley's fluid or mixed bacterial vaccine) is a mixture containing toxins filtered from killed bacteria of species Streptococcus pyogenes and Serratia marcescens, named after William Coley, a surgical oncologist at the Hospital for Special Surgery who developed the mixture in the late 19th century as a treatment for cancer.

  2. Bongkrek acid (also known as bongkrekic acid) is a respiratory toxin produced in fermented coconut or corn contaminated by the bacterium Burkholderia gladioli pathovar cocovenenans. It is a highly toxic, heat-stable, colorless, odorless, and highly unsaturated tricarboxylic acid that inhibits the ADP/ATP translocase, also called the mitochondrial ADP/ATP carrier, preventing ATP from leaving ...

    • Odorless and colorless
    • 50 to 60 °C (122 to 140 °F; 323 to 333 K)
    • C₂₈H₃₈O₇
    • 486.605 g·mol−1
  3. Botulinum toxin is used to treat a number of disorders characterized by overactive muscle movement, including cerebral palsy, [31] [32] post-stroke spasticity, [38] post-spinal cord injury spasticity, [39] spasms of the head and neck, [40] eyelid, [25] vagina, [41] limbs, jaw, and vocal cords. [42] Similarly, botulinum toxin is used to relax ...

    • C₆₇₆₀H₁₀₄₄₇N₁₇₄₃O₂₀₁₀S₃₂
    • Botox, Myobloc, Jeuveau, others
    • AU: B3
  4. en.wikipedia.org › wiki › CRISPRCRISPR - Wikipedia

    CRISPR (/ˈkrɪspər/) (an acronym for clustered regularly interspaced short palindromic repeats) is a family of DNA sequences found in the genomes of prokaryotic organisms such as bacteria and archaea.[2] These sequences are derived from DNA fragments of bacteriophages that had previously infected the prokaryote. They are used to detect and ...

  5. Rothia mucilaginosa is a Gram-positive, coagulase-negative, encapsulated, non-spore-forming and non-motile coccus, present in clusters, tetrads or pairs. [3] R. mucilaginosa can easily be confused for the bacteria from the genera Micrococcus and Staphylococcus. One way that it can be distinguished from those two is by its strong adherence to ...

  6. en.wikipedia.org › wiki › BacteriaBacteria - Wikipedia

    Bacteria (/ b æ k ˈ t ɪər i ə / ; sg.: 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.

  7. Carbon monoxide (chemical formula CO) is a poisonous, flammable gas that is colorless, odorless, tasteless, and slightly less dense than air. Carbon monoxide consists of one carbon atom and one oxygen atom connected by a triple bond. It is the simplest carbon oxide. In coordination complexes, the carbon monoxide ligand is called carbonyl. It ...