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 Indian J Med Microbiol  
 

Figure 2 :Main parts of designed screw: 1: Cover; 2: Piston 3: Coil, 4: Cylinder, 5: Assembled complex)

Figure 2 :Main parts of designed screw: 1: Cover; 2: Piston 3: Coil, 4: Cylinder, 5: Assembled complex)