الفهرس يوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
It is known that the heavy metals including lead are 4iglilvtoxic. However, they persist over a long’ period in the environment and they favour bioaccumulation, thus constituting a potential source of direct pollution for human Lead is one of the heavy metals commonly encountered in the environment and it consider as an important aquatic contaminant with different toxic effects On various organisms. br br This work aim to study the impacts of lead (in the form of lead acetate) oil the fish, Oreocliromis niloticus. This fish was chosen because it represents a fairly abundant species in Bahr Shebeen, besides the high resistant property of this species. br br Specinens of liver, kidney, ovary and. testis, were examinated by using light microscope In addition, liver Was , examinated by using electron microscope because most of lead usually accumulates in the liver that acts as a natural filter for the toxic material in the body.