The molecular fragment on an antigen molecule that a lymphocyte recognizes and responds to is called a(n) ________.
A. hapten
B. epitope
C. variable region
D. antigen binding site
Answer: B
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One of the pyrimidine bases in a DNA molecule is adenine
__________________ Indicate whether the statement is true or false.
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A. allergy B. allergen C. autoimmune response D. inflammation E. antibody-mediated immune response
The sum of histone modifications and their interactions is called the ________
A) protein code B) expression code C) transcription code D) genetic code E) histone code
Which of the following statements best describes the history of life on Earth?
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