Which tract originates from the red nucleus of the midbrain?

Explain the need for quality control in the preparation of sterile products

What will be an ideal response?

Immunological memory produced by vaccination:

a. Is the long-term persistence of protection due to the presence of memory B-cells b. Is not always detectable by serological testing c. Provides a strong and rapid response following re-exposure to the specific antigen d. All of the above