الفهرس 
INTRODUCTION AND AIM OF THE WORKOnly 14 pages are availabe for public view
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Abstract
INTRODUCTION
Since the creation of life during preceding centuries,
all bio-system have been exposed to natural back-ground
of ionizing radiations (osmotic and terrestrial irradiation) ..
However, associated with the development of
industrialization and civilization in this century ; man-made
radiation technology has increases in peaceful applications
as well as military uses. Ionizing radiation are now
incorporated in industry, agriculture, research and medicine
(treatment, diagnosis and research). Such applications
resulting in the employment of large numbers of workers,
thus the problem of occupational exposure to radiation has
an sen.
The response of the animals towards radiation
exposure greatfy depends on the radio sensitivity of its
organs and tissues. Among the radio sensitive tissues are
the testis and ovaries (Blakely, 1968).
Exposure to ionizing radiation caused genetic
hazards which could be transmitted to the next generations.
The delayed appearance of chromosomal aberration after
esposure to 3 Gy Cs137 gamma radiation, as a measure of
radiation induced genomic instability of mice cells in vitro
and in vivo recently studied by Ronnaiya et al. (1997).
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