Description_x000D_ Specificity_x000D_ This antibody reacts to the heavy chain of human IgM. No cross reactivity with human IgG, IgA, IgD, or IgE._x000D_ Immunogen_x000D_ Human IgM_x000D_ Physical form_x000D_ Solution in phosphate buffered saline containing 50% Glycerol/PBS with 1% BSA and 0.09% sodium azide._x000D_ Disclaimer_x000D_ Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.