In this instance, the medical and biotech generated stuff are much harder to identify because the algorithm doesn't need to introduce grammar issues. For instance, here is a random paper abstract that I changed, can you spot the change? Hint, it is one of the Greek symbols or a number.
Three highly pathogenic β-coronaviruses have crossed the animal-to-human species barrier in the past two decades: SARS-CoV, MERS-CoV and SARS-CoV-2. To evaluate the possibility of identifying antibodies with broad neutralizing activity, we isolated a monoclonal antibody, termed B4, that cross-reacts with eight β-coronavirus spike glycoproteins, including all five human-infecting β-coronaviruses.
