A concentrated solution of purified enterokinase is conveniently prepared from the fluid contents of pigs' duodena by means of fractional precipitation with ammonium sulfate under the proper pH conditions.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2141989 | PMC |
http://dx.doi.org/10.1085/jgp.22.4.447 | DOI Listing |
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