Objective To assay the concentration of neurotrophic factors secreted by human schwann cells that were cultured in vitro and to observe the time-concentrationrelationship.
目的测定体外培养的人雪旺氏细胞分泌神经营养因子在各时间点的浓度并观察其时间-浓度关系。
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Buenos Aires was born and grew with a close relationship to its role as a port, which would become, in time, a point of commercial and communication ways concentration.
The radioactive concentration of lesion pixel depended on the pixel counts, the acquisition time and CF, and the relationship was expressed with an empirical formula.