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  2. Essential thrombocythemia - Wikipedia

    en.wikipedia.org/wiki/Essential_thrombocythemia

    In hematology, essential thrombocythemia (ET) is a rare chronic blood cancer (myeloproliferative neoplasm) characterised by the overproduction of platelets (thrombocytes) by megakaryocytes in the bone marrow. [ 3 ] It may, albeit rarely, develop into acute myeloid leukemia or myelofibrosis. [ 3 ] It is one of the blood cancers wherein the bone ...

  3. Citrus greening disease - Wikipedia

    en.wikipedia.org/wiki/Citrus_greening_disease

    Citrus greening was first found in 2005 in the US and has cut the Orange tree production in half [2][3] Citrus greening disease or yellow dragon disease[4] (calque of Chinese: 黃龍病; pinyin: huánglóngbìng abbr. HLB) [5] is a disease of citrus caused by a vector -transmitted pathogen. The causative agents are motile bacteria, Liberibacter ...

  4. Glanzmann's thrombasthenia - Wikipedia

    en.wikipedia.org/wiki/Glanzmann's_thrombasthenia

    Glanzmann's thrombasthenia is an abnormality of the platelets. [ 2 ] It is an extremely rare coagulopathy (bleeding disorder due to a blood abnormality), in which the platelets contain defective or low levels of glycoprotein IIb/IIIa (GpIIb/IIIa), which is a receptor for fibrinogen. As a result, no fibrinogen bridging of platelets to other ...

  5. Megakaryocyte - Wikipedia

    en.wikipedia.org/wiki/Megakaryocyte

    Essential thrombocythemia (ET) is a disorder characterized by elevated numbers of circulating platelets. The disease occurs in 1–2 per 100,000 people. The 2016 WHO requirements for diagnosis include > 450,000 platelets/μL of blood (normal 150,000–400,000) and characteristic findings in a bone marrow biopsy.

  6. Boron deficiency (plant disorder) - Wikipedia

    en.wikipedia.org/wiki/Boron_deficiency_(plant...

    Boron is an essential micronutrient which means it is essential for plant growth and development, but is required in very small quantities. Although Boron requirements vary among crops, the optimum boron content of the leaves for most crops is 20-100 ppm. [8] Excess boron can result in boron toxicity and the toxicity level varies between plants ...

  7. Plant disease - Wikipedia

    en.wikipedia.org/wiki/Plant_disease

    For the journal, see Plant Disease (journal). Plant diseases are diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [ 1 ] Organisms that cause infectious disease include fungi, oomycetes, bacteria, viruses, viroids, virus -like organisms, phytoplasmas, protozoa, nematodes and ...

  8. Agrobacterium tumefaciens - Wikipedia

    en.wikipedia.org/wiki/Agrobacterium_tumefaciens

    Agrobacterium tumefaciens[ 3 ][ 2 ] is the causal agent of crown gall disease (the formation of tumours) in over 140 species of eudicots. It is a rod-shaped, Gram-negative soil bacterium. [ 4 ] Symptoms are caused by the insertion of a small segment of DNA (known as T-DNA, for 'transfer DNA', not to be confused with tRNA that transfers amino ...

  9. Plant pathology - Wikipedia

    en.wikipedia.org/wiki/Plant_pathology

    Plant disease triangle. Epidemiology is the study of factors affecting the outbreak and spread of infectious diseases. [10] A disease triangle describes the basic factors required for plant diseases. These are the host plant, the pathogen, and the environment. Any one of these can be modified to control a disease. [11]

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