article_snippet: The double helixes stay closed until specific molecules or proteins on the surface of cancer cells act like a 'key' to open the ‘barrel’ so the payload can be deployed.
article_snippet: The double helixes stay closed until specific molecules or proteins on the surface of cancer cells act like a 'key' to open the ‘barrel’ so the payload can be deployed.
article_snippet: The double helixes stay closed until specific molecules or proteins on the surface of cancer cells act as a 'key' to open the ‘barrel’ so the payload can be deployed. '