Which types of cells remain in the body, ready to attack a pathogen that re-enters the system? antigens

memory T and B cells

macrophages

pathogenic cells

If you were running a marathon, which type of muscle fibers would be most useful to you? a. slow-twitch b. fast-twitch, type i a c. intermediate-twitch, type ii b d. slow-intermediate twitch, type i b select the best answer from the choices provided. a b c d