Word: nuclei
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...People have been trying to understand quasars and active nuclei for many years now,” said Giuseppina Fabbiano, an associate at the Harvard Observatory and another co-author of the study. “This is the first time that we can say with real certainty that there is emission that comes from very near [the black hole...
...effects at those spots is neurophysiology. Plan on feeding those chemicals to a real person's brain, and you're doing neuropharmacology. Although they are concerned with myriad, complex, amazing things, none of these disciplines seem to find the mind. Somehow it's "smaller" than the tracts, ganglia and nuclei of the brain's gross anatomy--but "bigger" than the cells and molecules of the brain's physiology. We really should have bumped into it on the way down. Yet we have not. Like our own image in still water, however sharp, when we reach to grasp it, it just...
What makes oxygen oxygen and not, say, iron is not what these two elements are made of-both kinds of atoms have nuclei made of protons and neutrons, with a surrounding cloud of electrons. It's how many of these basic building blocks their nuclei contain. The fact that an oxygen atom has 8 protons, in particular, and iron 26 largely explains why you can breathe one and make a frying pan from the other...
...estrogen receptor (ER), located in the nucleus of 70 percent of breast cancer cells. When estrogen attaches to this receptor, the binding initiates a flurry of activity in genes directly related to cell growth and division. Many cancerous cells have a disproportionately high number of ERs in their nuclei, facilitating the rapid propagation of these malignant cells. Current drug-based treatment works by blocking ERs, thus slowing or stopping tumor growth. The study identified sections of DNA known as control regions, portions of genes pertaining to cell growth and division that bind to the ER. These control regions remotely activate...
...philosophy--all the achievements that make us profoundly different from chimpanzees and make a chimp in a business suit seem so deeply ridiculous--are somehow encoded within minute fractions of our genetic code. Nobody yet knows precisely where they are or how they work, but somewhere in the nuclei of our cells are handfuls of amino acids, arranged in a specific order, that endow us with the brainpower to outthink and outdo our closest relatives on the tree of life. They give us the ability to speak and write and read, to compose symphonies, paint masterpieces and delve into...