| 摘要 |
A modified substrate comprising a hydrophilic polymer in which the amount of soluble hydrophilic polymers contained is 15 wt.% or less and to which the sticking of human platelets amounts to 10 platelets / 4.3 x 103 mum2 or less; and a process for producing a modified substrate, comprising exposing to radiation a substrate while in contact with an aqueous solution containing a hydrophilic polymer and an antioxidant. Thus, there are provided a modified substrate having a hydrophilic polymer immobilized on a substrate surface, which modified substrate ensures high blood compatibility, and a process for producing the same.
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