title: A new technique to measure the liquefaction rate of human semen: the bag method.
mesh_terms: D002021:Buffers; D004542:Ejaculation; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008722:Methods; D012661:Semen / Q000502:physiology*; D013997:Time Factors
chemical_list: D002021:Buffers