Which woman gave rise to the immortal cell line? Detailed answer

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Which woman gave rise to the immortal cell line? Detailed answer

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Which woman gave rise to the immortal cell line?

In 1951, American Henrietta Lacks was diagnosed with cervical cancer and died the same year. Doctors at the hospital took samples of healthy and diseased tissue from her, which came to the researcher George Gay. He discovered a previously unknown phenomenon: Lux's tumor cells were able to survive and divide countless times. They pioneered the HeLa cell line, which has been used to develop a polio vaccine in cancer, HIV, radiation exposure, and a host of other trials by scientists around the world. It is estimated that more than 20 tons of HeLa cells have been grown since then, which exceeds Henrietta's weight in life by 400 times.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

Which writer manipulated the results of a psychological test in order to escape from prison?

When the American writer and psychologist Timothy Leary was convicted of drug possession, he was offered a standard test that Leary himself had developed a few years ago to determine where he was incarcerated. He filled out the test in such a way that his type was determined to be the most suitable for gardening and field work. Based on the results, Leary was assigned to work as a gardener in a soft-security prison, from which he escaped six months later.

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Found a way to increase brain tissue by 20 times 24.04.2017

American scientists have developed a way to increase the volume of brain tissue by almost 20 times, which greatly simplifies the visualization and study of brain innervation.

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The fact is that the brain is full of miniature formations called dendritic spines that line the signal end of the neuron. Thousands of microscopic protrusions make it possible to strengthen or weaken the connection of an individual neuron with the entire nervous system. However, the size of the spikes is so small that it is very difficult to study them with simple microscopes, and not every researcher has access to special equipment. But now it's in the past.

A group of researchers improved the method described above by developing the so-called "integration extension microscopy" method. With it, you can get almost a 20-fold increase in tissue! Neurons, after expansion manipulations, are visualized with light-emitting molecules associated with antibodies that are fixed to specific proteins.

The technique provided detailed images of brain tissue during a test in mice, as well as a detailed image of dendritic spines in the hippocampus, the center of the brain responsible for learning and remembering information. Further progress will allow neuroscientists to similarly visualize the many individual connections between neurons in brain tissue, as well as the unique arrangement of receptors that turn brain circuits on and off.

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