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Planarians

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Planarians 

a group of invertebrates of the suborder Tri-cladida of the class Turbellaria. Planarians are quite large, reaching a length of 35 cm. They are distributed throughout the world. The worms live in freshwaters and, less frequently, in seas; in the tropics they are also found in the soil. They feed on small invertebrates. Fishes do not eat planarians because the skin contains poison glands.



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In this book, Raffa and Rawls (Temple University School of Pharmacy) demonstrate that planarians can provide an accurate model for drug abuse which can complement mammalian studies and lead to possible therapeutic interventions.
So, researchers using planarians may learn about gene functions that can't currently be studied in knockout animals.
The remaining planarians were then placed in the train-a-tray, one at a time, to reverse their bias by shocking them until they went the other way 415 times or 80% The shock average for the control group was 3.
 
 
 
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