The original has been around forever as a "cold" virus that no one worried about, because although a cold could lead to being vulnerable to worse complications, usually it doesn't. As to "molecularly impossible," chemistry is all about constructing new molecules.
The original has been around forever as a "cold" virus that no one worried about, because although a cold could lead to being vulnerable to worse complications, usually it doesn't. As to "molecularly impossible," chemistry is all about constructing new molecules.