الفهرس 
Development of the tongue in the human
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Abstract
Postnatal development of the digestive system is important for digestion and absorption of the nutrient to support body growth aging is the natural phenomenon which is usually defined as the gradual biological impairment of normal function This work aimed to study postnatal development and aging changes in the tongue and jejunum of the male albino rat. In the present work, 50 albino rats were used and divided into 5 groups. According to their age. Each group consisted of 10 rats.