One of the problems we face when we try to draw conclusions from data is that we have to deal with

The cells that produce myelin in the peripheral nervous system are called:

A) Ranvier cells B) Node cells C) Oligodendrocytes D) Schwann cells

Which of these is not one of Hippocrates' four qualities that the universe is made up of?

A) Cold B) Hot C) Saturated D) Dry