They have identical characteristics. <span />
Answer:
B - Protons and Neutrons
Explanation:
This is because the electrons are in the electron cloud.
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D combination of DNA and proteins in the nucleus of a cell
An antigen is a biomolecule, such as a protein or sugar, that binds to a specific antibody. An antibody/antigen interaction may stimulate an immune response. Not every biomolecule is antigenic and not all antigens produce an immune response. B cells are the major cell type involved in the humoral immune response.
