Scientific Opinion on the substantiation of health claims related to various foods/food constituents and “immune function/immune system” (ID 573, 586, 1374, 1566, 1628, 1778, 1793, 1817, 1829, 1939, 2155, 2485, 2486, 2859, 3521, 3774, 3896), “contribution to body defences against external agents” (ID 3635), stimulation of immunological responses (ID 1479, 2064, 2075, 3139), reduction of inflammation (ID 546, 547, 641, 2505, 2862), increase in renal water elimination (ID 2505), treatment of diseases (ID 500), and increasing numbers of gastro intestinal microorganisms (ID 762, 764, 884) pursuant to Article 13(1) of Regulation (EC) No 1924/2006