Which are characteristics of the T cell antigen-specific receptor that differ from the B cell antigen-receptor? Multiple select question. The T-cell receptor is a smaller molecule. Only the T-cell receptor is inserted into the membrane. The T-cell receptor is lacking a variable region. The T-cell receptor is a larger molecule. The T-cell receptor is never secreted into body fluids. The T-cell receptor is made up of two polypeptide chains.