Immunoglobulin A only weakly. IgA exists in two isotypes, IgA1 and IgA2. They are both heavily glycosylated proteins. While IgA1 predominates in serum (~80%), IgA2 percentages are higher in secretions than in serum (~35% in secretions); the ratio of IgA1 and IgA2 secreting cells varies in the different lymphoid tissues of the human body: Both IgA1 and IgA2 have been found in external secretions like colostrum, maternal milk, tears and saliva, where IgA2 is more prominent than in the blood. Polysaccharide antigens tend to induce more IgA2 than protein antigens. Both IgA1 and IgA2 can be in membrane-bound form. ("see B-cell receptor")
A Band Called Death band with the same line-up. However, after two years of being homesick, David returns to Detroit, leaving Dannis and Bobby to form a lively reggae band called Lambsbread. The film also focuses on the intense brotherly bond between the group members, and their personal lives, including David Hackney's battle with alcoholism, his death in 2000 and his family members' reactions to these events. The film follows the re-discovery of the group through record collectors leading to an eventual release of Death's album "...For the Whole World to See" by the Drag City record label and the group's eventual reunion and