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    • #17116
      elynn
      Participant

      Dear everyone,

      I have a problem with my PCR. Its not consistent. Sometimes i got bands on my gel and sometimes i don’t get bands. however the mixture and pcr protocol is the same. I hv check my DNA and primers and they’re in good conditions. Is it normal to have this kind of problem? Can anyone suggest some solutions?

      Thanks

    • #113327
      emadsadeghian
      Participant

      have u tried adding dmso?

    • #113771
      gislab03
      Participant

      Do you include positive control for every run and does the positive control give appropriate band? And agarose gel is also important in visualising the results. You should use freshly prepared agarose and ethidium bromide solution.

    • #113966
      cathbr
      Participant

      What about the template that you are using? what is it? genomic DNA, plasmid,…? Are you sure that you are always using the same concentration and that the template quality is good and not degraded? and what kind of enzyme do you use?

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