Do methanol fixation and paraformaldehyde alter the ability to detect the foci of 53BP1 in cells?
Also, I would be interested to know if the protocol of pre-extraction (using the solution -25 mM Hepes, pH 7.4, 50 mM NaCl, 1 mM EDTA and RNAse) that we perform for Rad51 foci detection has any impact on the detection of other DNA repair proteins?
Any input in this regard will be highly appreicated.