Among coronaviruses , several members are able to interact with sialic acids .
that the BCoV group of viruses may have evolved from a TGEV - like ancestor
Among coronaviruses , several members are able to interact with sialic acids .
We discuss that the BCoV group of viruses may have evolved from a TGEV - like ancestor by acquiring an acetylesterase gene through heterologous recombination .