> The antibody known as 47D11 targets the spike protein that gives the new coronavirus a crown-like shape and lets it enter human cells. In the Utrecht experiments, it didn’t just defeat the virus responsible for Covid-19 but also a cousin equipped with similar spike proteins, which causes Severe Acute Respiratory Syndrome, or SARS.

> Monoclonal antibodies are lab-created proteins that resemble naturally occurring versions the body raises to fight off bacteria and viruses. Highly potent, they target exactly one site on a virus. In this case, the scientists used genetically modified mice to produce different antibodies to the spike proteins of coronaviruses. After a subsequent screening process, 47D11 emerged as showing neutralizing activity. Researchers then reformatted that antibody to create a fully human version, according to the paper.

I don't have any biology background - are you saying this targeting might not work?