Word: bacterias
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...breakthrough came in 1959 with the isolation of 6-aminopenicillanic acid, which is the hard core of all penicillin molecules. The new Penbritin is the first modification found to be active against a wider range of bacteria...
Early penicillins were active mainly against the berry-shaped microbes or cocci, such as streptococci, staphylococci and pneumococci. But they were ineffective against most rod-shaped bacteria. And most of them had two other draw backs: they were so quickly destroyed by digestive acids that they had to be injected directly into the bloodstream, and they were destroyed by the enzyme penicillinase. which is produced by resistant strains of staphylococci...
Death in 48 Hours. Using germfree animals to study human ills at the National Institute of Allergy and Infectious Diseases, a research team headed by Dr. Walter L. Newton has found that the organisms that cause amoebic dysentery cannot survive in the bowel unless bacteria are present. The Walter Reed Army Institute of Research has found that if germfree guinea pigs are taken out of their sterile environment and put in an ordinary animal room, all die of overwhelming infection within 48 hours. But, mysteriously, only 50% of mice die, and rats or chickens can be brought into the open...
...water to live happily; the Boeing system contains 80 gal lons, weighing more than 600 Ibs. Pilgrim is sure that this prohibitive weight can be reduced drastically, but he has other problems besides. Algae are delicate; they sometimes sicken, turn yellow, and die. They may fall prey to bacteria and other microscopic enemies. They may poison themselves with their own wastes...
...volt electrons of ordinary microscopes are not powerful enough to penetrate the two layers of film and the plump, water-filled bodies of healthy bacteria. So the upper part of Dupouy's sphere is filled with a powerful accelerator that delivers a beam of million-volt electrons. They are tricky and dangerous to handle, but carefully measured bursts of them pass through living bacteria and make meaningful shadow pictures of their insides, magnified 25,000 times. The bacteria are little the worse for their experience. Dupouy testified almost affectionately that when they are taken out of the formidable microscope...