Which of the Following is a Probable Lifespan of Memory

Question

Which of the following is a probable lifespan of memory B cells?
A) 5 minutes
B) 5 hours
C) 5 days
D) 5 years

Accepted Answer

Memory B cells have a long lifespan, estimated to be around 5 years or longer in humans. This allows them to provide long-term protection against recurring infections.