Applications:          WB-Western blot     IHC-Immunochemistry       IF-Immunofluorescence     IP-Immunoprecipitation     ChIP-Chormatin Immunoprecipitation

Reactivity:    H-Human  R-Rat  M-Mouse  Mk-Monkey  Dg-Dog  Ch-Chicken  Hm-Hamster  Rb-Rabbit  Sh-Sheep  Pg-Pig

CD5 is a cluster of differentiation found on a subset of IgM-secreting B cells called B-1 cells, and also on T cells. B-1 cells have limited diversity of their B-cell receptor due to their lack of the enzyme terminal deoxynucleotidyl transferase (TdT) and are potentially self-reactive. CD5 serves to mitigate activating signals from the BCR so that the B-1 cells can only be activated by very strong stimuli (such as bacterial proteins) and not by normal tissue proteins.