Our new paper is focused of the interactions between immunoglobulin secretion to lumen of the caecum and composition of bacterial microbiota in chickens. To understand the role of chicken immunoglobulins, we used cell sorting of bacteria with and without bound IgA followed by their identification as well as caecal contents originating from wilde type and Ig deficient chickens. Two may conclusion could be drawn. First, bakteria expressing S-layer proteins on their surface bound low levels of chicken IgA. Second, majority of bacteria common to the caecum were highly coated with IgA. IgA secretion was therefore used more important for fixing normal gut flora in chickens rather than to elimination of gut pathogens. For additional information, see the full paper here.