鹰潭头颈部深层解剖模型(湖北平均值颌架) (今日更新中)

SAN DIEGO (KGTV) — In their push to reopen schools, some political supporters of President Donald Trump have cited COVID-19 research from a group of San Diego scientists, claiming it’s evidence we could be close to herd immunity from the virus.But one of the authors of that research says that conclusion is way off.One of the most prominent supporters of the herd immunity conjecture is Dr. Scott Atlas, a neuroradiologist and senior fellow at Stanford University’s Hoover Institution who became an adviser to President Trump this month.“There’s a pretty good chance that herd immunity requires way less infections because of existing immunity out there,” Atlas said in a livestream conversation with San Diego County Supervisor Jim Desmond. “It actually may have already been reached in places like New York. We don’t know, but it’s possible.”Herd immunity is the level of protection needed to effectively stop the virus from circulating, thought to be about 70 percent of the population. The “existing immunity” to which Atlas is referring has to do with T cells.“It's just a misunderstanding of the science,” said Dr. Shane Crotty, a virologist at the La Jolla Institute for Immunology who co-authored the groundbreaking research on T cells in June.Crotty and his colleagues found that 50 percent of people unexposed to the novel coronavirus had T cells that could recognize it. Scientists refer to this as cross-reactive T cells, and the study was replicated in other countries.Proponents of the herd immunity theory take the number of people infected with the coronavirus, add the number of people with T cells that can recognize the virus, and come up with a number around the herd immunity threshold of 70 percent. But the math doesn’t work that way, according to Crotty, in part because T cells only kick in once a virus has hijacked cells, meaning T cells alone can't stop a pathogen in its tracks.“We’re not saying those 50 percent of people have protection like they’ve already had the virus,” Crotty said. “We’re saying those 50 percent of people have a head start in responding to the virus, which is a good thing but doesn’t affect herd immunity.”Since the novel coronavirus is a new pathogen, scientists did not expect people would have tools in their immune system capable of recognizing it. Unexposed people do not have cross-reactive antibodies, Crotty said.But in a study published this month in Science, Dr. Crotty and his colleagues offered a potential explanation for the surprising T cell results: they found these cross-reactive T cells also recognized four other coronavirus strains that cause common colds.Their theory: the T cells were created in response to other coronaviruses but can recognize SARS-CoV-2 like a distant relative.“It's a memory of a cousin,” Dr. Crotty said.That memory may speed up the body’s immune response, which can normally take about a week for an unknown pathogen, Crotty said. But scientists aren’t sure yet what role T cells actually play in clinical outcomes.“We have no data and and neither does anybody else as to whether these T cells really help or not,” Crotty said.To answer that question, scientists would need blood samples for lots of healthy people and then they would have to closely study individuals who got infected.The La Jolla Institute for Immunology is raising money for that kind of research, Crotty said, but they’re not there yet. 3417

SAN DIEGO (KGTV) — If you're looking for a grade A education that's worth the price of admission, you're in the perfect city.When it comes to getting the best bang for your educational dollar, University of California, San Diego, is the best in the state, and second best in the U.S., according to Money Magazine.The only college that ranked ahead of UCSD was Princeton University.RELATED: 3 San Diego colleges listed among best in The Princeton ReviewMoney's ranking boasts UCSD as a great value, saying the average student leaves with about ,500 in student debt and recent graduates earn about 14 percent higher than those from universities with similar student bodies, at about ,600 a year.The school also sports one of the highest six-year graduation rates in the country for a public college.Money's rankings report UCSD's estimated price for 2018-19 without any aid will cost about ,900, or about ,900 with aid. About 59 percent who apply for financial aid receive it.RELATED: UC San Diego ranks among world's top universitiesFollowing UCSD, UC Irvine and the University of California, Los Angeles, ranked in the top five. Money compiled the best schools based off 26 factors that focused on educational quality, affordability, and alumni financial success.To read more about the study, click here. 1344

SAN DIEGO (KGTV) -- It's lasagna-making time in the Rosenblatt home and mom Angela and her adorable 5-year-old helper, daughter Stella, are whipping up a big batch for strangers in need.Angela says, "I think it's a very different message that we send when we put our heart, we put our soul, we put our time into providing a home-cooked meal for someone."Angela is part of the organization Lasagna Love, founded by Rhiannon Menn who first posted her idea on social media in May. Angela was one of the first ten to answer the call to spread love through cooking."It inspires a little bit of hope. It confirms hope giving it forward that somebody cared enough about you," says Angela.Angela makes about twenty lasagnas a week in her Del Cerro kitchen, which means she has given more than 500 so far. She says she started learning how to whip up great food when she was young. "Growing up in the restaurant industry you cook with what you've got," says Angela, "it's always made with love. It's always made with some really great ingredients, but it's what I can get so I can feed as many people as I can."Volunteers drop the meals off at people's doors for pandemic safety and recipients often make it clear just how thankful they are. That includes essential worker Abigail Eastman who says, "I'm very grateful to you guys in this time of pandemic. You guys are making a difference one lasagna at a time."Sometimes, there is no feedback. Angela says she understands why."It's embarrassing to a lot of people, that this is the first time they have never been able to maybe provide for their family, and you can't be doing this for a thank you."Certainly for Angela and the now 3,000-plus volunteers in 47 states feeding their communities, the true motivation is feeding the soul."I hope that is a lesson that I'm able to show to my daughter, that even though we're having a hard time we can continue to move through it and we can continue to show grace," says Angela.Angela doesn't always make lasagna. Sometimes it's other dishes such as casseroles, but it's all made with love. If you're interested in cooking, delivering, making a donation or you need help, visit https://www.lasagnalove.org/. 2205

SAN DIEGO (KGTV) — Looking for a laugh? It is, after all, the best medicine, right?There's plenty of belly shaking humor to be discovered around San Diego. From open mic nights to nationally-known comics being showcased, locals can find it all at our city's comedy clubs.If you're looking for a spot to sit down, have a drink, and spit-take that drink, here's where you'll find the fun around town:The American Comedy Co.: 818 B 6th Ave., San DiegoAMC is located in the heart of the Gaslamp District, giving guests to chance to spend the night downtown and enjoy laughs with little travel time between activities. The club's underground feel also gives it a speak-easy, intimate vibe. | ScheduleThe Comedy Store: 916 Pearl St., La JollaDavid Letterman threw out the first joke to usher in the famed Comedy Store's La Jolla digs in 1977. The comedy spot gives visitors the comfort of a night near a scenic view of the Pacific while enjoying some laughs. | ScheduleThe Mad House Comedy Club: 502 Horton Plaza, San DiegoNational and local comics take the stage at Mad House most nights every week in Horton Plaza. | ScheduleThe Comedy Palace: 8878 Clairemont Mesa Blvd., Kearny MesaCheck out a lineup of local and nationally-featured comics taking the stage in Kearny Mesa at The Comedy Palace. | ScheduleThe Comedy Club at Pechanga: 4500 Pechanga Pkwy., TemeculaPechanga Resort Casino's Comedy Club brings together some of the comedy circuit's brightest stars and up-and-comers, offering comedy and dinner packages as well. | ScheduleSycuan Live & Up Close: 3007 Dehesa Rd., El CajonNational comedians hit the stage at Sycuan Resort & Casino's Live & Up Close performances. | ScheduleNational Comedy Theatre: 3717 India St., San DiegoImprov comedy and entertainment for all ages from national troupes can be seen at National Comedy Theatre. | ScheduleWinston's Beach Club: 1921 Bacon St., Ocean BeachOpen mic nights, comedy showcases, and roast battles are held weekly at Winston's in OB. | Schedule 2017

SAN DIEGO (KGTV) - In a graphic display, a former charter boat captain demonstrated Wednesday how to make the knots found on Rebecca Zahau’s body, according to the San Diego Union-Tribune.Zahau was discovered bound and hanging from a balcony of the Spreckels Mansion in Coronado in 2011.While the San Diego County Medical Examiner’s office determined the death was a suicide, Zahau’s family believes she was murdered.The Zahau family filed a wrongful death lawsuit against Adam Shacknai, the brother of Rebecca’s boyfriend and the only other person in the home at the time of her death.Lindsey Philpott used a lifelike mannequin covered with a white sheet to show the overhand and clove hitch knots, which, according to the U-T report, Philpott said were common for nautical uses.Shacknai works as a tugboat captain.Philpott said under cross-examination that both knots are simple and widely used, the Union-Tribune reported.The Zahau wrongful death trial, which was in its fifth day Wednesday, is expected to last four weeks. 1034

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