河北男性盆部横断断层解剖模型(九江乳房解剖模型) (今日更新中)

NEW YORK (AP) — Singer-songwriter Justin Townes Earle, a leading performer of American roots music known for his introspective and haunting style, has died at age 38.New West Records publicist Brady Brock confirmed his death, but did not immediately provide details.Earle was the son of country star Steve Earle and over the weekend his family posted a Facebook announcement of his death, telling his fans that they hope his music will continue to guide them for years to come.His family also posted lyrics from the ballad “Looking for a Place to Land,” from Earle’s 2014 album “Single Mothers.” 603

New research suggests that antibodies the immune system makes to fight the new coronavirus may only last a few months in people with mild illness, but that doesn’t mean protection also is gone or that it won’t be possible to develop an effective vaccine.“Infection with this coronavirus does not necessarily generate lifetime immunity,” but antibodies are only part of the story, said Dr. Buddy Creech, an infectious disease specialist at Vanderbilt University. He had no role in the work, published Tuesday in the New England Journal of Medicine.The immune system remembers how to make fresh antibodies if needed and other parts of it also can mount an attack, he said.Antibodies are proteins that white blood cells called B cells make to bind to the virus and help eliminate it. The earliest ones are fairly crude but as infection goes on, the immune system becomes trained to focus its attack and to make more precise antibodies.Dr. Otto Yang and others at the University of California, Los Angeles, measured these more precise antibodies in 30 patients diagnosed with COVID-19 and four housemates presumed to have the disease. Their average age was 43 and most had mild symptoms.Researchers found that the antibodies had a half-life of 73 days, which means that half of them would be gone after that much time. It dovetails with a previous report from China also suggesting antibodies quickly fade.The results “call for caution regarding antibody-based ‘immunity passports,’ herd immunity, and perhaps vaccine durability,” the California authors write.That’s true, Creech said, but other parts of the immune system also help confer protection. Besides churning out antibodies, B cells develop a memory so they know how to do that again if needed.“They would get called into action very quickly when there’s a new exposure to the virus. It’s as if they lie dormant, just waiting,” he said.Other white blood cells called T cells also are better able to attack the virus the next time they see it, Creech said.Although circulating antibodies may not last long, what we need to know is if and how people remake antibodies if exposed to the coronavirus again and if they protect against another infection, Alison Criss, an immunologist at the University of Virginia, wrote in an email. “We also need to know if there is a protective T cell response” that reappears.Vaccines, which provoke the immune system to make antibodies, might give longer-lasting protection than natural infection because they use purified versions of what stimulates that response, she noted.Creech agreed.“This shouldn’t dissuade us from pursuing a vaccine,” he said. “Antibodies are only a part of the story.”___Marilynn Marchione can be followed on Twitter at http://twitter.com/MMarchioneAP___The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content. 2967

NEW YORK (AP) — A new federal report shows vaping rates among U.S. teenagers fell dramatically this year.The drop comes in the wake of last year's outbreak of vaping-related illnesses and deaths.The national survey found that just under 20% of high school students and 5% of middle schools students were recent users of electronic cigarettes and other vaping products.That marks a big decline from a similar survey last year that found about 28% of high school students and about 11% of middle school students recently vaped. That's a decline of about 1.8 million teens total.The survey was done by the U.S. Food and Drug Administration and Centers for Disease Control and Prevention. They looked at survey data from middle school and high school students, grades 6-12.Despite the progress in lowering the number of teens using e-cigarettes, there are 3.6 million youth who currently use them. Of those, almost 83% use flavored e-cigarettes or vaping products.In addition to the survey, the FDA announced their premarket review requirement of tobacco products to ensure they go through a “robust scientific evaluation” before hitting store shelves. 1156

NEW YORK, N.Y. — President Donald Trump's former political adviser Steve Bannon was arrested Thursday morning on charges that he and three others scammed many people who donated an online fundraising scheme called “We Build The Wall.”The charges were outlined in an indictment unsealed in Manhattan federal court.Federal prosecutors say Bannon and three others “orchestrated a scheme to defraud hundreds of thousands of donors" in connection with an online crowdfunding campaign that raised more than million to build a wall along the southern border of the U.S.Along with Bannon, the other three men arrested in the case are Brian Kolfage, Andrew Badolato, and Timothy Shea. They’re each charged with one count of conspiracy to commit wire fraud and one count of conspiracy to commit money laundering, both of which carry a maximum penalty of 20 years in prison.According to the indictment, the scheme started in December of 2018.To induce donors to donate to the campaign, court documents say Kolfage repeatedly and falsely assured the public that he would “not take a penny in salary or compensation” and that “100% of the funds raised . . . will be used in the execution of our mission and purpose” because, as Bannon publicly stated, “we’re a volunteer organization.”Those representations were reportedly false. In truth, prosecutors say Kolfage, Bannon, Badolato, and Shea received hundreds of thousands of dollars in donor funds from "We Build the Wall," which they each used in a manner inconsistent with the organization’s public representations.In particular, Kolfage is accused of covertly taking more than 0,000 in donations for his personal use, while Bannon allegedly used a non-profit organization under his control to receive over million from the campaign. Prosecutors say Bannon used at least some of that money to cover hundreds of thousands of dollars in personal expenses.To conceal the payments to Kolfage from "We Build the Wall," the men allegedly devised a scheme to route those payments from the campaign to Kolfage indirectly through a nonprofit and a shell company under Shea’s control, among other avenues.“They did so by using fake invoices and sham ‘vendor’ arrangements, among other ways, to ensure, as Kolfage noted in a text message to Badolato, that his pay arrangement remained ‘confidential’ and kept on a ‘need to know’ basis,” prosecutors say.Acting U.S. Attorney Audrey Strauss said: “As alleged, the defendants defrauded hundreds of thousands of donors, capitalizing on their interest in funding a border wall to raise millions of dollars, under the false pretense that all of that money would be spent on construction. While repeatedly assuring donors that Brian Kolfage, the founder and public face of We Build the Wall, would not be paid a cent, the defendants secretly schemed to pass hundreds of thousands of dollars to Kolfage, which he used to fund his lavish lifestyle. We thank the USPIS for their partnership in investigating this case, and we remain dedicated to rooting out and prosecuting fraud wherever we find it.” 3088

NEW YORK (AP) — U.S. health officials are dropping a controversial piece of coronavirus guidance and telling all those who have been in close contact with infected people to get tested.The Centers for Disease Control and Prevention (CDC) essentially returned to its previous guidance about such tests."Due to the significance of asymptomatic and pre-symptomatic transmission, this guidance further reinforces the need to test asymptomatic persons, including close contacts of a person with documented SARS-CoV-2 infection," the CDC wrote in a "clarification" posted Friday. With the change, the CDC got rid of language posted last month that said people who didn’t feel sick didn’t need to get tested.That August change set off a rash of criticism from health experts who couldn’t fathom why the nation’s top public health agency would say such a thing amid a pandemic that has been difficult to control.The New York Times reports that last month's change was not actually written by CDC scientists and was posted to the agency’s website despite their serious objections. It reportedly came from the Department of Health and Human Services.The CDC website now says testing is recommended for all close contacts of persons with SARS-CoV-2 infection. "Because of the potential for asymptomatic and pre-symptomatic transmission, it is important that contacts of individuals with SARS-CoV-2 infection be quickly identified and tested," the agency writes. 1458

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