The Donath-Landsteiner Antibody:
A) Binds to the Red Cell Membrane $\degree$

The Donath-Landsteiner antibody:

A) Binds to the red cell membrane at 37 $\degree$ C
B) Is found in serum and causes lysis of donor RBCs, which have first been incubated at 4 $\degree$ C and then warmed to 37 $\degree$ C
C) Has specificity for Ii blood group antigens
D) Is associated with lymphoma