Hi, I am using PBS, donkey serum and Tween for blocking solution. Unfortunately , the next day there is fungal contamination in the solution. How can I avoid this contamination for ICC
It is likely that one of the blocking solutions was already contaminated. Did you check them individually under a microscope? We aliquot our sterile blocking solutions and handle them in the laminar flow hood. The overnight blocking in the refrigerator is not long enough for significant contamination if the slides or dishes are covered .