| 单词 | myxoma |
| 例句 | Scientists killed hundreds of millions of them by introducing the myxoma virus — the deadliest vertebrate virus — but as Carl Zimmer wrote in June, the rabbits adapted and kicked off an evolutionary arms race. Your Tuesday Briefing: China’s New Military Drills Near Taiwan 2022-08-08T04:00:00Z The myxoma looked as if it was just the right size to block that opening. A Mysterious Fall Was the First Sign Something Was Wrong 2022-07-13T04:00:00Z But the myxoma virus — fatal to millions of Australian rabbits — is a textbook example of a virus that did not get milder over time. Your Tuesday Briefing 2022-06-21T04:00:00Z For many virologists, the best example of this unpredictability is a pathogen that has been ravaging rabbits in Australia for the past 72 years: the myxoma virus. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z Day said there are documented cases of animal viruses that evolved over time to become more lethal, including myxoma virus in rabbits and Marek’s disease in chicken. NOT REAL NEWS: A look at what didn’t happen this week 2021-07-02T04:00:00Z A myxoma is a rare, slow-growing tumor, usually found in the heart. Suddenly the Man Couldn’t See. Was His Chest Pain Connected? 2021-02-04T05:00:00Z It looked like a benign tumor, called a myxoma, Minella said. A Mysterious Fall Was the First Sign Something Was Wrong 2022-07-13T04:00:00Z The most familiar example is that of the myxoma virus, a pathogen introduced to Australia in 1950 to rid the country of rabbits. Will the coronavirus evolve to be less deadly? 2020-11-14T05:00:00Z After its introduction in 1950, myxoma virus became less lethal to the rabbits, but Dr. Read and his colleagues discovered that it reversed course in the 1990s. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z A few years later, the virus, called myxoma, was released in France and eventually spread to the United Kingdom. Seventy years ago, humans unleashed a killer virus on rabbits. Here's how they beat it 2019-02-14T05:00:00Z In the 1950s, the myxoma virus, which causes myxomatosis, was introduced and reduced the rabbit population from 600 million to 100 million in two years. Australia’s Easter Bunny: the Long-Eared Greater Bilby 2014-04-20T01:17:24Z Its development from fibrous tissue is more likely to result in a fibroma; from fat tissue, a lipoma, or a myxoma; from cartilage or bone, a chondroma or osteoma. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z But over time, a tense truce developed: Rabbits evolved resistance, the myxoma germ declined in virulence, and both rabbits and germ remained in precarious balance for some time. Will the coronavirus evolve to be less deadly? 2020-11-14T05:00:00Z Scientists intentionally introduced the myxoma virus to Australia in the hopes of wiping out the country’s invasive rabbit population. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z Tumours of Tendon Sheaths.—Innocent tumours, such as lipoma, fibroma, and myxoma, are rare. Manual of Surgery Volume First: General Surgery. Sixth Edition. Shortly after myxoma’s introduction, the Australian virologist Dr. Frank Fenner started a careful, long-term study of its carnage. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z Its pathological occurrence in the adult as a circumscribed tumor, the myxoma, may also be mentioned. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z Dr. Fenner determined in laboratory experiments that the myxoma virus killed 99.8 percent of the rabbits it infected, typically in less than two weeks. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z They had discovered the myxoma virus in a species of cottontail rabbit native to South America. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z New growths include the fibroma, the myxoma, the myeloma or giant-celled tumour, and various forms of sarcoma. Manual of Surgery Volume First: General Surgery. Sixth Edition. Yet the myxoma virus did not eradicate the Australian rabbits. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z Through the 1950s, Dr. Fenner discovered why: The myxoma virus grew less deadly. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z The law of declining virulence seemed to explain why myxoma viruses became less lethal in Australia — and why they were harmless back in Brazil. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z But when the scientists infected European rabbits in their laboratory, the myxoma virus proved astonishingly lethal. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z Myxoma.—A myxoma is composed of tissue of a soft gelatinous, semifluid consistence. Manual of Surgery Volume First: General Surgery. Sixth Edition. Dr. Read decided to revisit the myxoma virus saga when he started his laboratory at Penn State in 2008. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z No one had systematically studied the myxoma virus after Dr. Fenner stopped in the 1960s. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z Dr. Read arranged for Dr. Fenner’s samples to be shipped to Pennsylvania, and he and his colleagues also tracked down more recent myxoma samples. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z The Brazilian scientists shipped samples of the myxoma virus to Australia, where scientists spent years testing it in labs to make sure it posed a threat only to rabbits and not other species. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z Mucous polypus of the nose, which is often described as a myxoma, is merely a pendulous process of œdematous mucous membrane. Manual of Surgery Volume First: General Surgery. Sixth Edition. Roughly a decade ago, a new lineage of myxoma viruses emerged in southeastern Australia. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z Virologists see some important lessons that the myxoma virus can offer as the world grapples with the Covid pandemic. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z But the coronavirus, like myxoma, has not been on an inevitable path to mildness. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z A few scientists even injected myxoma viruses into themselves. Think All Viruses Get Milder with Time? Not This Rabbit-Killer 2022-06-20T04:00:00Z The pure myxoma is extremely rare, and clinically resembles the lipoma. Manual of Surgery Volume First: General Surgery. Sixth Edition. |
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