The National Institutes of Health has stunningly admitted to funding gain-of-function research on bat coronaviruses at China's Wuhan lab despite Dr. Anthony Fauci repeatedly insisting to Congress that no such thing happened. In a letter to Rep. James Comer (R-Ky.) on Wednesday, a top NIH official blamed EcoHealth Alliance " the New York City-based nonprofit that has funneled US funds to the Wuhan lab " for not being transparent about the work it was doing. NIH's principal deputy director, Lawrence A. Tabak, wrote in the letter that EcoHealth's "limited experiment" tested whether "spike proteins from naturally occurring bat coronaviruses circulating in China were capable of binding to the human ACE2 receptor in a mouse model." Gain-of-function research refers to viruses being taken from animals before they are genetically altered in a lab to make them more transmissible to humans. The admission from the NIH official directly contradicts Fauci's testimony to Congress in May and July, when he denied the US had funded gain-of-function projects in Wuhan. As recently as last month, Fauci was accused of lying about gain-of-function research after documents, obtained by the Intercept, detailed grants given to EcoHealth Alliance for bat coronavirus studies. [A] grant proposal detailed in the trove of documents was for a project titled "Understanding the Risk of Bat Coronavirus Emergence," which involved screening thousands of bat samples, as well as people who worked with live animals, for novel coronaviruses.