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

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

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Immunological Techniques
What would happen if serum is omitted from the ELISA, but all other steps remain same?

The OD values would be nearly the same as the assay control
Both (a) and (b)
Anti-human Ig-conjugate would not bind and be washed away
Anti-human Ig-conjugate would bind non-specifically to the ELISA plate

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