Leading Biology's MASP1 Rabbit pAb (APR26021N) is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Western Blot. The MASP1 Rabbit pAb (APR26021N) Antibody was generated using MASP1, and MBL associated serine protease 1 as the antigen and it reacts with Human, Mouse, and Rat.