Some coronavirus mutations may help it evade immune system's T-killer cells, say scientists The researchers sequenced 750 genomes of the novel coronavirus from infected individuals and analysed mutations for their potential to alter T cell epitopes. Share Via Email | A+A A- By PTI LONDON: Some mutations in the novel coronavirus may not only enable it to evade antibodies, but also make the virus unrecognisable to the immune system's T-killer cells, says a new study which could aid in the further development of vaccines. While antibodies dock directly onto viruses to neutralise them,...