"Seal the concrete with a silicate based sealer, such as the products from endur-o-seal. These are sprayed on to the cement with a garden sprayer, soak into the cement and fill the pores with a solution that gels and then hardens over a period of several days."
Slipknot 
Given the diversity of the human species, there is no “normal” human genome sequence. We are all mutants.
Threaded Mode