Properties of haptens include() A: Immunogenicity and antigenicity B: antigenicity but no immunogenicity C: Immunogenicity but no antigenicity D: Neither immunogenicity nor antigenicity E: Macromolecular nature

The feature of hapten is () A: only<br/>reactionogenicity B: only<br/>immunogenicity C: both<br/>reactionogenicity and immunogenicity D: neither<br/>reactionogenicity and immunogenicity E: all choices<br/>incorrect

Which of the following means a measured portion of medicine taken at any one time? A: vaccine B: antigen C: immunogenicity D: dosage