Word: proteins
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Dates: during 1970-1979
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Experimental winged-bean plantings are now under way in some 50 countries, partly as a result of a widely distributed report by the National Academy of Sciences that concluded: "The winged bean appears to have great potential for easing the problem of protein malnutrition throughout the humid tropics." But for all their enthusiasm, scientists admit that to begin widespread growth and use of the plant where it has never been grown before may involve obstacles, botanical and otherwise. Indeed, so perverse are human beings that it may prove a difficult thing to change eating habits. As the University of Florida...
Thomas said he wouldn't sell milk from such sick cows, however. "We milked the cows probably three years longer than we would've if we knew what we know now," he said. Yet for three years state veterinarians told him his cattle were suffering from low protein, or parasites--not PBB poisoning, he said. He added, "Everybody was telling us it was our problem alone...
...virus was identified as the cause of flu and dubbed influenza A. In 1946-47 another form of A emerged, and about this time virologists working with electron microscopes made an important discovery. They found that the outer coat of each virus particle is studded with hundreds of protein spikes. There are two types: hemagglutinin, a biochemical glue that makes red cells clump together and helps the virus get into cells, and an enzyme called neuraminidase that dissolves the glue and helps the virus get out of cells. These spikes are also the antigenic proteins that stimulate the human system...
Virologists have now rechristened flu viruses, using the initials H and N for the two protein spikes and numbering their major changes. Thus the last major shift, the Hong Kong flu of 1968, becomes H3N2. But within each such shift minor changes known as drift can occur, and the last two of the five H3N2 drifts are A/Victoria and A/Texas...
...from the heart flows to the kidneys for filtration and removal of wastes. Exercise causes the body to shunt more blood to the muscles, reducing the flow to the kidneys by as much as 50%. But the kidneys continue to work at the same rate and apparently filter more protein out of a smaller volume of blood. Exercise also seems to cause constriction of the efferent arterioles, the vessels that lead out of the glomeruli, the kidney's filtration units. The result is a backup that increases pressure in the glomeruli and makes them more permeable, allowing proteins...