We discuss
that the BCoV group of viruses may have evolved from a TGEV - like ancestor
We discuss that the BCoV group of viruses may have evolved from a TGEV - like ancestor by acquiring an acetylesterase gene through heterologous recombination .
We discuss that the BCoV group of viruses may have evolved from a TGEV - like ancestor by acquiring an acetylesterase gene through heterologous recombination .