>> There exists a less toxic chemical than EtBr to stain DNA: SYBR safe >> DNA stain (a fluorescence dye sold by a certain vendor). > > SYBR Safe is about 10X less sensitive though.Can you do the toothbrush test with SYBR Safe?
I wouldn't do that. As it is considerably more hydrophobic, I'd expect it to have more interactions with the body than EthBr. If anything, I expect SYBR Safe to be a lot less safe than EthBr.
- Dima