WASHINGTON : Scientists have produced images of the novel coronavirus infecting lab-grown respiratory tract cells, findings that illustrate the number of virus particles that are produced and released per cell inside the lungs.The researchers, including Camille Ehre from the University of North Carolina (UNC) Children's Research Institute, captured these images to illustrate how intense SARS-CoV-2 infection of the airways can be in very graphic and easily understood images.The generated high-powered microscopic images show a large number of the virus particles on human respiratory surfaces, ready to spread infection across tissues, and to other people.In the research, the scientists inoculated the novel coronavirus SARS-CoV-2 into human.