Western blot identification of <i>phy</i>A2 protein in gastrointestinal digesta of laying hens fed diet phytase transgenic corn for 16 weeks.

<p>“+” Positive control (GM corn); lane 1, crop contents; lane 2, gizzard contents; lane 3, duodenal contents; lane 4, jejunum contents; lane 5, ileum contents; lane 6, cecal contents; lane 7, rectal contents.