Despite major breakthroughs in HIV prevention and treatment, there were an estimated 1.8 million people newly infected with HIV in 2018, and an estimated 5,000 new HIV infections around the world every day. The pursuit for ...
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Like an emergency response team that is called into action to save lives, stress response proteins in the heart are activated during a heart attack to help prevent cell death. As part of this process, Lewis Katz School of ...
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Researchers have identified a potential new drug target in the fight against cancer.
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Combining a new class of drug with two other compounds can significantly shrink lung tumours in mice and human cancer cells, finds a new study led by the Francis Crick Institute and The Institute of Cancer Research, London.
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Scientists at the Stanford University School of Medicine have shown for the first time that severe brain cancers integrate into the brain's wiring.
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In 2018, breast cancer was the most common cancer in women worldwide, accounting for about a quarter of all reported cancers. When breast cancer metastasizes, the brain is a common destination.
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It is well known that individuals who work night shifts or travel often across different time zones have a higher tendency to become overweight and suffer from gut inflammation. The underlying cause for this robust phenomenon ...
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Short bowel syndrome is a debilitating condition with few treatment options, and these treatments have limited efficacy. The ability to grow artificial intestine is a coveted goal with the potential to profoundly improve ...
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Scientists have designed a new method for post-operative wound closing and healing that is both fast and effective. This strategy revolves around engineered "cell sheets"—or layers of skin-based cells. The procedure culminates ...
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Pancreatic adenocarcinoma (PDAC) is a lethal malignancy that most often is resistant to chemotherapy. Researchers have been searching for ways to increase the sensitivity of the tumors to cancer-fighting drugs.
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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
