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GC content of probe is 40%,
The hybridization mixture consisted of 50% formamide, 2xSSC, and was denatured at 70 C for 10 min,
Washing in 2xSSC, 50% formamide in 2xSSC at 40 C,
È»ºó£¬ÎÒÔø¾­¿´µ½Ò»¸ö¹«Ê½¼ÆËãTm
Tm=81.5 +0.41 (%GC content of probe) +16.6 log (molarity of monovalent cations)-500/(probe fragment length)-0.61(%formamide)

=81.5+0.41x0.40+16.6 log 0.39 (0.3M Nacl+ 3x0.03M trisodium citrate  right?)-500/400-0.61x0.5

=73.315 ( right?)

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