Not dangerous at all. Requires high concentrations of reagents to function, can't penetrate cells on it's own, sensitive to pH and solution conditions, protein

Not dangerous at all. Requires high concentrations of reagents to function, can't penetrate cells on it's own, sensitive to pH and solution conditions, protein doesn't aerosolize on it's own, etc. The government regulates how you can use it, but cas9 itself is harmless