You can refer Molecular cloning 3rd ed., Appendix 8.55.
HRP with tetramethyl-benzidine and AP with nitro blue tetrazolium, both can detect 100pg.
This is more sensitive than classical chemiluninescent regents (300pg-). But you should be more careful about quantification.
If you can use fluorescent scanner, fluorescent dye conjugated secondary antibodies may be useful. |
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