Gentherapy Has Risks Because

Multiple Choice

Gentherapy has risks because

A) the virus-injected gene may be overexpressed in the patient.
B) the virus-injected gene may cause allergies.
C) it is impossible to predict where a virus-injected gene will insert into chromosomes.
D) the virus-injected gene may stay outside of the cells and never be taken up.
E) of all of these.