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Results 1381 - 1390 of 1398 for Tumors
  • Health - 26 Feb 2019
    Immunodeficiency diseases have traditionally been defined as defects in the development and function of T and B cells, the primary effector cells of specific cellular and humoral immunity...
  • Health - 25 Feb 2019
    The incidence of lung cancer in the 20th century has largely mirrored the rise and fall in cigarette smoking. The risk of lung cancer in smokers is ten times that of non-smokers. However, the...
  • Health - 16 Jan 2019
    This article examines the health benefits of organic food, which is thought to contain higher concentrations of specific vitamins and nutrients.
  • Health - 15 Jan 2019
    Hearing loss or hearing impairment can be categorized as either conductive hearing loss, sensorineural hearing loss or a mixed type that exhibits underlying symptoms of both conductive and...
  • Health - 5 Dec 2018
    A tracheotomy is a surgical procedure that creates an opening into the trachea for the installation of a breathing tube.
  • Health - 4 Dec 2018
    Nails are unique structures formed of keratin, just like hair or skin. Nail diseases vary in etiology and morphology. The most common types are presented here.
  • Health - 7 Nov 2018
    All artificial sweeteners are firmly regulated and can only be used after they have been assessed rigorously for their safety.
  • Health - 26 Oct 2018
    Ion channels are membrane proteins, which play a principal role in regulating cellular excitability. They are found in virtually all cells, and are of crucial physiological importance. Based on the...
  • Health - 22 Oct 2018
    Natural killer (NK) cells are large granular lymphocytes that possess natural cytotoxicity against tumor cells and virus-infected cells, as well producing cytokine signal messengers.
  • Health - 8 Oct 2018
    The incidence of colorectal cancer has risen over the past few decades. The development of colorectal cancer is mainly due to genomic and epigenomic instability. Understanding more about its...

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