Rabbit Anti-Human Laminin-211 monoclonal antibody for FC, ICC, IF,. Laminin is a non-collagenous protein of basement membranes. By rotary shadowing it has a cross-like shape, consisting of one long arm, (400 kD) and three short arms (200 kD). Antibodies to laminin localize exclusively in basement membranes. Laminin is found throughout the basement membrane, but the reaction with the antibodies to laminin is more intense in the lamina lucida, the part of the basement membrane adjacent to the cell membrane. Laminin binds to type IV collagen, a component exclusively localized in the basement membrane. Laminin has been shown to play a role in cell adhesion and attachment in vivo and in vitro.