The BAH-1 monoclonal antibody was raised against human megakaryocytic cells. It was originally proposed that clone BAH-1 was specific for human CD110, also known as c-Mpl or TPO-R. Data has emerged to suggest that BAH-1 antibody may not recognize CD110. However, there is strong evidence that it recognizes an antigen that is highly expressed on human Megakaryocyte-Erythroid Progenitor (MEP) cells. In combination with CD71, BAH-1 expression has been used to distinguish subsets of Hematopoietic Stem Cells and Myeloid Progenitors in human fetal liver, cord blood, and adult bone marrow. BAH-1 antibody can induce megakaryocytopoiesis of both mouse and human bone marrow cells in vitro.
The antibody was conjugated to BD Horizon™ BB700, which is part of the BD Horizon Brilliant™ Blue family of dyes. It is a polymer-based tandem dye developed exclusively by BD Biosciences. With an excitation max of 485 nm and an emission max of 693 nm, BD Horizon BB700 can be excited by the 488 nm laser and detected in a standard PerCP-Cy™5.5 set (eg, 695/40-nm filter). This dye provides a much brighter alternative to PerCP-Cy5.5 with less cross laser excitation off the 405 nm and 355 nm lasers.