MadSci Network: Biochemistry |
Hi Huong,
I am not a pro when it comes to these types of methods, but hopefully this answer will help:
In general for these types of procedures, Tween helps to wash away unbound blocking agent (the BSA in the BTBS solution). In other ELISA-type procedures, or steps in this procedure, it can also prevent non-specific antibody binding (or washes away unbound antibody). Tween is a type of detergent, so its general use is to help keep moleculaes separated (prevent interactions, aggregations, etc.).
Hope this helps!
Karin
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