مسمار الخرز في تطوير الدجاج أطراف الجنين لتحديد مسارات نقل الإشارة التي تؤثر على التعبير الجيني

By grafting beads soaked in growth factors or specific inhibitors of signaling pathways into developing embryos it is possible to directly test their effects in vivo. In this protocol beads are grafted into the limb bud to determine the effects of these molecules on gene expression and signal transduction.