Antigen
The antibiotic penicillin is a small molecule that does not induce antibody formation. However, penicillin binds to serum proteins and forms a complex that in some people induces antibody formation resulting in an allergic reaction. Penicillin is therefore

an immunogen
a hapten
an antigen
both an antigen and a hapten

ANSWER DOWNLOAD EXAMIANS APP

Antigen
CD antigens

are expressed on immune cells to mark them for separation
function as receptors for cytokine and CAMs
allow leukocytes to recognize antigen
are each expressed on only one cell type

ANSWER DOWNLOAD EXAMIANS APP

Antigen
For specific antigen recognition by T cells,

denaturation of antigen does not reduce epitope recognition
antigen is bound by a T cell membrane antibody
antigen exposure during T cell maturation is required
MHC molecules are not required

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Antigen