T Cell Receptors
A) Are Found in the Circulation $\alpha$ $\beta$

Multiple Choice

T cell receptors

A) are found in the circulation.
B) contain variable and regulatory regions.
C) are tetrameric complexes that contain $\alpha$ , $\beta$ , $\gamma$ , and $\delta$ polypeptide chains.
D) bind antigens present on the surface of other cells.