Form:Supplied as a liquid in 100mM borate buffered saline, pH 8.0. No preservatives or amine-containing buffer salts added.
Specificity:Recognizes an epitope on mouse I-Ek MHC class II alloantigen. Reacts with the I-Ek class II alloantigen on cells from mice of the H-2r haplotype; reactivity with H-2d and H-2p haplotypes has not been observed.