As the trial of COVID-19 vaccine enters the third phase, AMU Vice-Chancellor Professor Tariq Mansoor on Tuesday got himself registered to be the first volunteer for the Covaxin trials. The phase 3 trials of Covaxin developed by Bharat Biotech began at JN Medical College and Hospital (JNMCH) of the Aligarh Muslim University (AMU) here. Prof Tariq Mansoor volunteered himself to motivate and inspire others to come forward, an AMU spokesman said.