A student wrote down three statements about antibodies.
1 Their structure depends on peptide, hydrogen and disulfide bonds.
2 They are protein molecules with both tertiary and quaternary structure.
3 Four polypeptides provide four antigen binding sites.
Which statements are true?
1 )
1, 2 and 3
1 and 2 only
3 )
1 and 3 only
4 )
2 and 3 only
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