MHC tetramers:
A. are a novel way to detect and follow specific T-cell populations within an organisms.
B. are found only in mice though a parallel system in humans is under current investigation.
C. describe high-functioning TC cells found in autoimmune response.
D. represent novel immunotherapy for patients with Chron's disease.
E. use fluorescent staining to bind to MHC class I molecules on dendritic cells.
Answer: A