Subhash Chandra Yadav is an assistant professor of electron microscopy and nanotechnology at the All India Institute of Medical Sciences (AIIMS), New Delhi, India, since June 2015 and is currently working as an additional professor. He earned his PhD from the Institute of Medical Sciences, Banaras Hindu University (BHU), Varanasi, India. He has been a visiting researcher at Free University (FU) Berlin, Germany, and a postdoctoral fellow at the Indian Institute of Science (IISc), Bengaluru, India, and the University of Tennessee Medical Center, Knoxville, TN, USA. He has worked as a scientist in charge of the electron microscopy facility at the Institute of Himalayan Bioresource Technology (CSIR-IHBT) in Palampur, India, and the TERI-Deakin University Nanobiotechnology Centre. He has also been a visiting professor at Stanford University, USA. Dr Yadav has significantly utilized electron microscopy for the last 18 years to develop cost-effective and visual nanodiagnostic devices for prostate and cervical cancer and the BK virus, various nanoformulations for value addition, and targeted delivery vehicles. He worked extensively during the COVID-19 pandemic to explore the ultrastructural impact of SARS-CoV-2 infection in patients with acute respiratory distress syndrome (ARDS), including young and old patients with and without comorbidities, such as diabetes, liver and kidney disease, and malignancy.