Multiple Choice
Which of the following is NOT an example of a mechanical or chemical barrier to pathogens?
A) lysozymes in tears
B) acids secreted in the stomach
C) phagocytes
D) tight junctions between epithelial cells
Correct Answer:

Verified
Correct Answer:
Verified
Q21: Tear fluids and other secretions are rich
Q22: Cancer cells should be recognized by the
Q23: Describe how the heavy chains and light
Q24: Self-antigens in the retina and central nervous
Q25: Explain why only one in three attempts
Q27: Which cell type is responsible for providing
Q28: Which receptor proteins are displayed by dendritic
Q29: Class switch recombination generates antibodies with:<br>A)different light-chain
Q30: Autoimmune diseases are associated with particular alleles
Q31: Irradiation prevents mice from generating their own