Word: protozoa
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Dates: during 1960-1969
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...living heart muscle itself. When the crop was injected into mice, the animals died in much the same way as heart-failure patients. What can the particles be? The investigators can only speculate that they may be a hitherto unknown form of life, with some of the properties of protozoa (such as malaria parasites) and some properties of viruses. If they are right, they may be on the track of other unexplained diseases...
...Heezen reported to an oceanographic conference at Moscow University, showed that the most recent magnetic-field reversal occurred about 700,000 years ago, following earlier flips 2,500,000 and 3,500,000 years ago. Fossil remnants in the slices also indicated that several new species of algae and protozoa suddenly appeared about 2,500,000 years ago and existed without significant change until 700,000 years ago. Then, within a short time span, some of those species completely disappeared, others underwent marked change, and new species emerged...
...epidemic proportions in Viet Nam. Later, they suspected she might have cancer. But an exploratory operation uncovered nothing, and meanwhile her condition continued to worsen. She developed uremic poisoning and began to hemorrhage internally. Finally, the doctors surmised that she had a rare tropical ailment called leishmaniasis, in which protozoa from the bite of a sandfly enter the bloodstream and attack the liver and spleen. As a rule, few people die of the disease if they are properly treated, but in Marguerite Higgins' case, the doctors were unable to arrest it. Last week, at 45, she died...
...science program started with one microscope and some left-over laboratory equipment. Goldberg and Bayne, both biology concentrators, used this apparatus to teach the campers about molecules and cells, chlorplasts, and protozoa...
MICROBIOLOGY: All biologists use microscopes, but microbiologists study microorganisms such as bacteria and protozoa...