Which disease is the only vaccine-preventable disease that is infectious but not contagious?

What is the difference between apheresis and electrophoresis?

What will be an ideal response?

A coworker states he is licensed to practice in his field. What does this mean?

A. He has the right, which was conferred by a governmental entity, to practice an occupation or provide a service. B. He has purchased a certificate stating he is licensed to practice through a private agency. C. He has completed the educational requirements and a practicum in his field of study. D. None of these statements adequately defines licensing.