Word: bacterias
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...three of the biologists were honored for their experiments with bacteriophages, a group of viruses that infect bacteria. Scientists had long known that after it invades a bacterial cell, a virus multiplies rapidly into such great numbers that the cell bursts, releasing a host of identical viruses that seek out and enter other cells, where the process is repeated. By studying these viruses, researchers hoped to learn how more complex forms of life reproduce and pass on hereditary traits...
...ized bacteria or other signs of ancient life. Fireman is analyzing the radioisotopes of helium, argon and hydrogen to determine the effects of the solar wind-a stream of high energy particles from the sun-on the lunar rock...
Like other algae, Palmellococcus thrives on light, moisture, mineral salts and carbon dioxide. Yet when it can feed on such organic substances as sweat, pollen and bacteria-which were also brought into the grotto-it will multiply well even in dim light. If enough of these nutrients are present, it can survive without any light at all. In fact, it was this steady buildup of organic matter, Lefevre and Laporte say, that enabled Palmellococcus to proliferate even when the cave was shut down and left in total darkness...
...from quahaugs (thick-shelled clams) have been found to be active against some forms of cancer in mice. So far, chemicals from shellfish appear to have only moderate potency, but the sea offers an almost infinite variety of other potential sources, such as algae, corals and sponges, and the bacteria that live in or on them...
...Blaiberg's doctors were at once faced with the problem of controlling the immune mechanism by which the body seeks to reject any invading foreign substance, especially protein. Nature devised this complex reaction largely to protect the higher animals against parasitism and infection by such lowly microbes as bacteria and viruses. But the defense works equally well against tissues from higher animals, including those from any other man (except an identical twin...