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 Quinn Called Quinn is currently featured on STV's online advert which features 360-degree views of Glasgow, Edinburgh & Aberdeen. A Band Called Quinn A Band Called Quinn are an electronic indie rock band from Glasgow, Scotland. Founding members Bal Cooke (drummer/producer) and Louise Quinn (singer/ songwriter) met whilst working for a performance art company in Glasgow. Other long term members are Robert Henderson (keyboards/ trumpet) and Steven Westwater (bass). Previous line ups included Alex Kapranos (Franz Ferdinand). A Band Called Quinn's track DIY opened the sixth episode of Season 1 of The Royals (TV series) on E!. The series was created