湖州肾脏放大模型(郑州骨骼肌纤维与运动终板放大模型) (今日更新中)

The U.S. has surpassed another bleak marker in the COVID-19 pandemic, as the country has reached 10 million confirmed cases of the virus, according to a database kept by Johns Hopkins.The milestone comes just hours after global cases surpassed 50 million, meaning about one out of every five people around the world diagnosed with the virus since the pandemic began has been diagnosed in the U.S.At least 237,000 Americans have died of the virus since the pandemic began. The U.S. continues to lead the world in both total cases and in deaths linked to the virus.The U.S. surpassed its 10 millionth case as the country deals with a disturbing spike in infections ahead of the winter months. The country surpassed 120,000 new cases in a single day three times last week, obliterating previous records. Prior to last week, the most confirmed cases the U.S. had seen in a single day was 102,000.The U.S. has recorded a million new cases of COVID-19 in the last 10 days alone. The country surpassed the 9 million case plateau on Oct. 30.In addition to the spike in cases, hospital resource use is also on the rise, and deaths linked to the virus are up slightly in recent days, though the death rate is not near what it was in March and April. Johns HopkinsHealth experts have warned that the U.S. is currently in a perilous position in the pandemic, with transmission rates as high as they have ever been as Americans move social gatherings indoors for winter months.In a memo last week, Dr. Deborah Birx — a member of the White House coronavirus task force — warned that the country is entering "the most deadly and concerning" phase of the pandemic.Late last month, Dr. Anthony Fauci — a member of the White House coronavirus task force and the county's top expert on infectious diseases — warned that the U.S. was in for a "whole lot of pain" if things didn't change soon.The U.S. did get some good news in the pandemic on Monday, as Pfizer announced that its vaccine candidate has been 90% effective in promoting immunity against the virus. However, even if the vaccine were to get FDA approval in the next few days, it would still take several months for most of the country to be vaccinated — and officials fear that vaccine skepticism could keep immunity levels below the threshold to stifle the virus. 2314

The remains of Spc. Vanessa Guillen were found near the Leon River in Texas, bringing an end to the search for the Fort Hood soldier. The attorney for the Guillen family said last week that the family believed the human remains found Tuesday were those of Guillen but a positive identification was pending."The Army has identified the remains of missing Fort Hood soldier Vanessa Guillen," her family's lawyer said in a statement to ABC News on Sunday evening.On Monday, the Army Criminal Investigative Team confirmed the remains were of Guillen's. “I know I can speak for everyone involved in this tragic situation that we are truly heartbroken for the family, friends and fellow Soldiers of Spc. Guillen,” said Brigadier General Duane Miller, the acting commanding general of the U.S. Army Criminal Investigation Command. “There are no words that can express the sorrow and loss that the family has endured, but we hope in some very small way, the collective efforts of everyone involved in finding Vanessa and working to bring those responsible to justice will help bring some degree of closure to the family who has had to endure this painful and senseless loss.”The two suspects in her disappearance are Spc. Aaron Robinson and Cecily Anne Aguilar, a civilian.According to the affidavit, the suspects allegedly dismembered Guillen's body and attempted to burn it after she was bludgeoned to death by Spc. Robinson.Special Agents from the U.S. Army Criminal Investigation Command, along with the U.S. Marshals, Killeen Police Department, and the Lone Star Fugitive Task Force were attempting to locate Robinson on June 30 when he fled the post.When Robinson was located, officers attempted to make contact him as he produced a weapon and committed suicide by shooting himself. Aguilar has been arrested for tampering/ fabricating physical evidence with intent to impair a human corpse, a second degree felony. If conviction, Aguilar faces up to 20 years in federal prison and a maximum 0,000 fine.Guillén’s family said through their lawyer that they believe Vanessa was sexually harassed by the military suspect and is calling for a Congressional investigation.20-year-old Guillen was last seen on the morning of April 22 in the parking lot of her Regimental Engineer Squadron Headquarters, 3rd Cavalry Regiment on Fort Hood, Texas, and had not been heard from since that date.The Army Criminal Investigation Command has been working closely with multiple law enforcement agencies throughout this investigation to include the FBI, Belton Police Department, Bell County Sheriff’s Department, the United States Marshals Service, the Texas Rangers and the Texas Department of Public Safety.This article was written by Thalia Brionez for KXXV. 2754

The Wake Forest Institute for Regenerative Medicine says it has a new use for its bioprinting system. In the past they've 3D printed normal-size organs and tissues in hopes of someday implanting them in patients.For the coronavirus, the lab is creating organs using human cells that can be as small as a pinhead. They're focusing on the organs most likely to be infected by the disease. like the lungs.“And so we've been playing with a number of agents to, on both prongs what can make it more infective, what can make it less infective to try to sort this out for the future,” Anthony Atala, director for the institute said.Atala says he hopes the system will help in testing drugs before they hit the market.Drug companies do extensive testing and clinical trials in people before releasing a new medication.Atala says sometimes those companies find no serious side effects, but then years later, discover that it's toxic to patients taking it. Atala says testing a drug using the bioprinting system can tell if a drug is toxic in weeks instead of after years on the market.“Even though we've used the tool extensively for toxicity testing, it's also a tool that can be used for screening,” Atala said. “So we can test agents that are currently being considered for testing against COVID and test the efficacy of the treatment on miniature human organs made up of normal cells”To be clear, Atala said drug tests on 3D printer organs are not meant to replace clinical trials in humans, be are an added step to better predict what will happen in those trials. 1567

The weekend didn't make things any easier for students of Marjory Stoneman Douglas High School: Parents had to lay teen children to rest; the family who had taken in shooter Nikolas Cruz said they didn't know they were living with a "monster;" and a tweet from President Donald Trump seemed to infuriate an already-angry student body.The students promised action in the wake of the massacre that left 17 of their classmates and teachers dead. They're headed to Tallahassee, Florida, to speak to legislators about school safety and gun control this week, and they have school walkouts and a march scheduled in the coming months.Meanwhile, Anthony Borges, 15, continued his recovery. He's one of four patients who remain hospitalized after Wednesday's massacre in Parkland, Florida. He was shot five times, according to the Broward County Sheriff's Office.  868

The US Food and Drug Administration pressed forward with its investigation of e-cigarette companies Friday, sending letters to 21 companies in an effort to uncover whether they are marketing products illegally and outside the agency's compliance policy.This latest phase of the investigation addresses more than 40 e-cigarette products and is part of the agency's ongoing efforts to combat e-cigarette use among youth. It also comes less than two weeks after the agency conducted a surprise inspection of e-cigarette maker Juul's corporate headquarters in San Francisco, seizing thousand of documents, many of which relate to its sales and marketing practices."Companies are on notice," FDA Commissioner Dr. Scott Gottlieb said in a statement Friday. "The FDA will not allow the proliferation of e-cigarettes or other tobacco products potentially being marketed illegally and outside of the agency's compliance policy, and we will take swift action when companies are skirting the law."In September, Gottlieb called the increasing teen use of e-cigarettes "an epidemic," adding that teen nicotine use is dangerous to young people's health and brains.Federal law prohibits the sale of e-cigarettes to people under the age of 18, but more than 2 million middle and high school students were current users of e-cigarettes in 2017, according to the FDA. The US Centers for Disease Control and Prevention says it's the most common nicotine product used by middle and high schoolers.Also last month, the FDA requested that five major e-cigarette manufacturers, including Juul, explain how they plan to combat the use of their products by minors. The agency said it was looking into steps to eliminate the sale of flavored products and unveiled a public education campaignabout e-cigarettes.The FDA said it's considering civil and criminal avenues to enforce these regulations, including fines, seizures and injunctions, according to Friday's announcement.CNN reached out to some of the companies that received letters for comment but did not immediately receive a response."We're going to address issues related to the access kids have to e-cigarettes, as well as the youth appeal of these products," Gottlieb said Friday. "We know flavors are one of the principal drivers of the youth appeal of e-cigarettes and we're looking carefully at this."No reasonable person wants to see these products reaching epidemic use among kids," he said. 2500

来源：资阳报