Question

what happened to the hela cells after henrietta died? choose two.
a they kept growing outside her body.
b they spread disease to millions of people
c they were used for medical research
d they were made into a vaccine against cancer

Explanation:

HeLa cells are immortal cells. After Henrietta died, they continued to grow in vitro (outside the body) and have been widely used in medical research for decades. They did not spread disease to millions of people (they are used in a controlled laboratory environment for research, not as a pathogen to infect people). Also, there is no vaccine made directly from HeLa cells against cancer.

Answer:

A. They kept growing outside her body, C. They were used for medical research