http://articles.mercola.com/sites/articles/archive/2000/07/09/milk-reactions.aspxMany cow's milk-intolerant children experience very delayed reactions to a cow's milk challenge. The following summarizes the results of a recent study. Cow's milk challenge tests were conducted 12 months after institution of cow's milk-free diets inenCommunityServer 2008.5 SP1 (Build: 31106.3070)