Which of the following cells are affected in mulitple sclerosis?

Which of the following white blood cells fight off cancer cells?

The influenza virus ______________.

What contributes to the production of blood cells?

HIV infection occurs through contact with?

Water constitutes between _____ percent of body weight.

Energetic value of food is measured by:

What is known as the minimal energy expenditure of an organism at rest?

Which part of the nervous system is composed of the brain and spinal cord?

Specific Immunity_____.