الفهرس 
Histological TechniquesOnly 14 pages are availabe for public view
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Abstract
Nicotine is one of the main components of the poisonus alkaloids present in tobacco plant ”Nicotine tobacum” it constitutes from 4- 6% of dry weight of tonbacco leafs.
Nicotine and its isomer nor-nicotine ara volatile liqued alkaliods resdily soluble in water.
There is an isometric atom in the molecule (β,pyridyl-α -N - methyl--pyrolidine) and hence there will be optical activity for this compound. Under high temperature it will racemize to d-L from ( Goodman and Gilmand’, 1980).
A - in this study provided was used two sets of eggs frog Egyptian Alriqtae enriched Each set contains 100 eggs, one exposed daily dose of nicotine of 0.20 mg Nicuitin and other exposed daily for a dose of 0.4 mg nicotine from the first day of fertilization was the mortality rate 100% During the first two weeks of nicotine exposure in both Almmootain and therefore considered These Jeratan the Mmattan.
B - In an attempt to use nicotine in doses of non-lethal conducted other experiments on two sets of fertilized eggs of the frog Egyptian Alriqtae contain on each 100 eggs exposed daily to Gerhh of nicotine, the amount of 0.05 mg nicotine for the first group and a dose of 0.10 mg nicotine for the second group.
Result:
1 - Ajnah of dead reached the stage of growth did not reach the to mutate stage.
2 - Alehihwalta fetuses exposed to doses of 0.05 mg and 0.10 mg nicotine nicotine showed a delay in shorthand in body size and lasted longer events mutation may fit this effect is directly proportional with increasing dose.
3 - from the results of exposure to doses of 0.05 mg and 0.10 mg nicotine nicotine in the fertilized eggs of a delay in the local exposure level of comprehensive Aljmjmo structure and spine and limbs and bones PACKAGES.