To learn more, go to the college text I have written, ESSENTIALS OF THE LIVING WORLD, which you can purchase from Amazon as a soft-bound book or as a digital textbook. In my text, you can explore the specific learning objective related to your interest (noted below), and relate that objective to other columns I have written.
Book Title: Essentials of the living world. ed 5
Chapter Title: Chapter 13 - The New Biology
Section Title: Genetic Engineering and Medicine
Head: Making "Magic Bullets"
Page Number: 231