Immunological Techniques
Agarose gel electrophoresis and pulsed field gel electrophoresis may be used to resolve respectively

10 kb and 1000 kb DNA
20 kb and 2000 kb DNA
2000 kb and 20kb DNA
1000 kb and l0kb DNA

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Immunological Techniques
In Counter immunoelectrophoresis

the antibody will migrate towards anode
the antibody will migrate towards cathode
electrophoresis will drive the antibody and antigen parallel to each other
electrophoresis will drive the antibody and antigen toward each other

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