Small molecules induce trained immunity, opening a new approach to fighting disease
Vaccines provide a front-line defense against dangerous viruses, training adaptive immune cells to identify and fight specific pathogens.
Jul 8, 2024
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Vaccines provide a front-line defense against dangerous viruses, training adaptive immune cells to identify and fight specific pathogens.
Jul 8, 2024
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Mutations are changes in the molecular "letters" that make up the DNA code, the blueprint for all living cells. Some of these changes can have little effect, but others can lead to diseases, including cancer. Now, a new study ...
Jun 12, 2024
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An injectable emulsion containing two omega-3 fatty acids found in fish oil markedly reduced brain damage in newborn rodents after a disruption in the flow of oxygen to the brain near birth, a study by researchers at Columbia ...
Jun 6, 2024
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Aneuploidy (the presence of an abnormal number of chromosomes) in embryos is a major cause of impaired embryo development, leading to conditions such as Down syndrome, as well as to pregnancy loss. The transfer of such embryos ...
Jun 3, 2024
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The human genome consists of around 3 billion base pairs and humans are all 99.6% identical in their genetic makeup. That small 0.4% accounts for any difference between one person and another. Specific combinations of mutations ...
May 21, 2024
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Research presents an advance in drug delivery and tissue implantation assisted by ultrasound, developed by researchers from the Technion Faculty of Biomedical Engineering. The work is published in the journal Small Methods.
Apr 22, 2024
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A novel screening system developed at Kyoto University enables researchers to investigate sperm cell development and health at the molecular level.
Mar 5, 2024
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Every system in a living organism depends upon a finite supply of energy in order to function. In humans, no organ is more energy-intensive than the brain, which consumes about 20% of the body's metabolic energy.
Jan 25, 2024
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A new study sheds light on how autophagy, the body's process for removing damaged cell parts, when impaired, can play a role in causing heart failure.
Jan 11, 2024
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Case Western Reserve University and MetroHealth cancer researchers have successfully unraveled a mystery surrounding a receptor protein that can either suppress cancer or foster its growth and spread. The findings, recently ...
Dec 13, 2023
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The cell is the structural and functional unit of all known living organisms. It is the smallest unit of an organism that is classified as living, and is often called the building block of life. Some organisms, such as most bacteria, are unicellular (consist of a single cell). Other organisms, such as humans, are multicellular. (Humans have an estimated 100 trillion or 1014 cells; a typical cell size is 10 µm; a typical cell mass is 1 nanogram.) The largest known cell is an unfertilized ostrich egg cell.
In 1835 before the final cell theory was developed, a Czech Jan Evangelista Purkyně observed small "granules" while looking at the plant tissue through a microscope. The cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells. All cells come from preexisting cells. Vital functions of an organism occur within cells, and all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells.
The word cell comes from the Latin cellula, meaning, a small room. The descriptive name for the smallest living biological structure was chosen by Robert Hooke in a book he published in 1665 when he compared the cork cells he saw through his microscope to the small rooms monks lived in.
This text uses material from Wikipedia, licensed under CC BY-SA