A number of existing strains of SARS-CoV-2, as well as other future variants that could arise, have the potential to escape the immune system's cytotoxic T cell response in some portion of the population. That's the conclusion ...
Molecular & Computational biology
Feb 10, 2022
0
797
Stanford researchers accidentally discovered that iron nanoparticles invented for anemia treatment have another use: triggering the immune system's ability to destroy tumor cells.
Bio & Medicine
Sep 26, 2016
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4073
Researchers at ETH Zurich recently identified a previously unknown compartment in mammalian cells. They have named it the exclusome. It is made up of DNA rings known as plasmids. The researchers have published details of ...
Cell & Microbiology
Oct 2, 2023
0
716
For the first time, MIT researchers have performed a large-scale, high-resolution study of the cells in breast milk, allowing them to track how these cells change over time in nursing mothers.
Cell & Microbiology
Apr 5, 2022
0
769
In an article published in Physical Review Letters, Bristol scientists have answered the fundamental question: "Is it possible to move without exerting force on the environment?", by describing the tractionless self-propulsion ...
General Physics
Dec 16, 2019
13
2851
They say you can't judge a book by its cover. But the human immune system does just that when it comes to finding and attacking harmful microbes such as the coronavirus. It relies on being able to recognize foreign intruders ...
Molecular & Computational biology
Jun 13, 2020
0
814
In addition to antibodies and white blood cells, the immune system deploys peptides to fight viruses and other pathogens. Synthetic peptides could reinforce this defense but don't last long in the body, so researchers are ...
Biochemistry
Aug 24, 2021
0
3004
Scientists have discovered a way to manipulate the body's own immune response to boost tissue repair. The findings, published in Current Biology today, reveal a new network of protective factors to shield cells against damage. ...
Biochemistry
Nov 18, 2019
1
855
Herpes viruses reactivate in more than half of crew aboard Space Shuttle and International Space Station missions, according to NASA research published in Frontiers in Microbiology. While only a small proportion develop symptoms, ...
Cell & Microbiology
Mar 15, 2019
36
4670
One viral protein could provide information to deter pneumonia causing the body's exaggerated inflammatory response to respiratory viruses, including the virus that causes COVID-19.
Cell & Microbiology
Jan 18, 2022
0
1195
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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