I've used several methods but could not get a good result in PCR. For mi it is very important to see a sharp band.
if you work on bacterial shapes you have to use yeast manitol agar medium plus red congo to edentify the symbiontts bacterial shapes or you have to emplify Nodc regions by PCR
PCR need pure DNA, I think found error in DNA extract or PCR program.
you can applied more programs to get sharp band
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