The purpose of taking a probiotic is ________________. 

The main function of B lymphocytes is ____________________.

Order the six stages of phagocytosis. 

How is the T4 virus able to penetrate the cell wall of E. coli?

How do scientists introduce virus particles to the inside of a chicken egg?

Which of the following are the body’s first line of defense? Select all that apply. 

Which of the following is true about lymph?

There are three pathways by which Complement is activated:  _______ _______ _______

The specific type of defensive blood cells are called _______

The suffix -itis means  _______