High-density honeycomb network + nano science and technology + water affinityultrafiltration membrane.
高密度蜂巢网+纳米科技材料+亲水超滤膜。
2
A kind of hepatocyte growth factor was purified from cow placenta through high speed centrifugation, salting out, affinity chromatography, ultrafiltration and anion exchange chromatography.