The body is pretty good at healing itself, though more severe wounds can require bandages or stitches. But researchers publishing in ACS Applied Materials & Interfaces have developed a wound-healing ink that can actively ...
Jun 1, 2023
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My 4-year-old son has had many episodes of painful sore throats, and his doctor recommended that his tonsils be removed. Why do kids have more trouble with their tonsils? Is there a right age to have the surgery done? I've ...
May 16, 2023
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Researchers from the Department of Molecular Biology and Genetics at Koc University in Turkey and the Pole of Endocrinology, Diabetology and Nutrition, Institute of Experimental and Clinical Research at Université Catholique ...
Diet drinks often contain a mix of non-nutritive sweeteners that also enter the bloodstream after consumption. As a new pilot study shows, even dietary intake levels of saccharin, acesulfame-K and cyclamate are enough to ...
May 16, 2023
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Humans encounter innumerable pathogenic bacteria, viruses and other microbes in their day-to-day activities. While infections from some pathogens can be easily cleared by the innate immune system, others can evade this first ...
May 11, 2023
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Efforts are underway to address the "epidemic of loneliness and isolation" affecting the country, as recently addressed by the U.S. Surgeon General Dr. Vivek Murthy who is laying out a "National Strategy to Advance Social ...
May 11, 2023
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If you or someone you know experiences allergies, you've probably heard of the life-threatening reaction called anaphylactic shock.
May 10, 2023
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Applying the same solution to different problems is a common mistake, not only among humans but also in our immune system. Flooding a wound with inflammation-causing white blood cells can be helpful for fighting infection, ...
May 8, 2023
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The immune system has a biological telecommunications system—small proteins known as interleukins that send signals among the leukocyte white blood cells to control their defense against infections or nascent cancer. Interleukin-6, ...
May 6, 2023
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In an 11-year study, researchers at the National Institutes of Health have further characterized idiopathic CD4 lymphocytopenia (ICL), a rare immune deficiency that leaves people vulnerable to infectious diseases, autoimmune ...
May 3, 2023
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White blood cells (WBCs), or leukocytes (also spelled "leucocytes"), are cells of the immune system defending the body against both infectious disease and foreign materials. Five different and diverse types of leukocytes exist, but they are all produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell. Leukocytes are found throughout the body, including the blood and lymphatic system.
The number of leukocytes in the blood is often an indicator of disease. There are normally between 4×109 and 1.1×1010 white blood cells in a litre of blood, making up approximately 1% of blood in a healthy adult. An increase in the number of leukocytes over the upper limits is called leukocytosis, and in leukopenia, this number is much lower than the lower limit. The physical properties of leukocytes, such as volume, conductivity, and granularity, may change due to activation, the presence of immature cells, or the presence of malignant leukocytes in leukemia.
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