ABSTRACT The present investigation was conducted to evaluate the effect of the natural plant food constituent, xanthine alkaloid (caffeine), on the developing chick embryos considering both morphological and skeletal alterations. To achieve these goals, fertile eggs of Egyptian Fayoumi chicken (_Gallus gallus domisticus_.) were used. Eggs of the experimental group were divided into three subgroups each of which was injected ... Read more

ABSTRACT The present investigation was conducted to evaluate the effect of caffeine on morphogenesis and the development of liver and kidneys of chick embryos at both histological and immuno-histochemical levels. To achieve these goals, four groupes of fertile eggs of Egyptian Fayoumi (_Gallus gallus domisticus_) were used. The first group was served as control while the second, third and the ... Read more