Epitopes or antigenic determinants  

In humans, the stem cells from which all blood cells arise are found in the  

Entry of bacteriophages and animal viruses into host cells    

The lack of susceptibility to diseases of other species in humans may be due to the  

Pseudomonas species

Which is not a component of innate immunity?  

The cells primarily involved in all immune responses are the

Which of the following are diseases caused by protozoa?  

Resistance of some animals to certain viral diseases is based on  

The reservoir of infection for botulism and tetanus is