Respuesta :
Answer:
I think it's interferon.
Explanation:
Interferons are substances produced by cells in the body to help fight infections and tumors. So, it would make sense if they don't have interferon, with severe combined immunodeficiency.
A person with severe combined immunodeficiency has no interferon.
What is an Interferon?
These are protein substances produced by the body cells to help fight
infection and diseases.
A person with severe combined immunodeficiency means his immune
system isn't strong enough to fight off diseases . This is most likely due to
the individual lacking an interferon which makes it the most appropriate
option.
Read more about Interferon here https://brainly.com/question/3980169