The glucose isomerase may be exogenously added or expressed in the strain and exported into the media.
葡萄糖异构酶可以外源方式添加，也可以在菌株中表达并输出到培养基中。
2
It has been reported that exogenously administering MT could prolong life, postpone aging, and reduce the incidences of age-related diseases.
近年来国外有研究表明，MT分泌减少与机体衰老及某些老年性疾病的发生有关。
3
Most of the literature on bank runs takes the asset side of the bank activities as given and assumes that the bank's returns are determined by an exogenously given production function.