Seitetsu Kagaku Co., Ltd.

Taiko Seno

Masao Kawamura

Yasuto Okubo

Hirosuke Fukuda

Seiichi Akutsu

An anti-I sorbent which comprises as I blood group substances at least two materials selected from the group consisting of mucin and milk derived from Eutheria and ovomucoid from Ornithurae. The use of the anti-I sorbent inhibits the formation of false positive agglutination caused by anti-I autoantibody.

Anti-I sorbent

A process for preparing uridine diphosphate-N-acetylgalactosamine, which comprises treating a reaction solution obtained by the enzymatic conversion of uridine diphosphate-N-acetylglucosamine to uridine diphosphate-N-acetylgalactosamine, with uridine diphosphate-N-acetylglucosamine pyrophosphorylase to decompose the remaining uridine diphosphate-N-acetylglucosamine in the solution and then separating therefrom the uridine diphosphate-N-acetylgalactosamine for purification. In one aspect of this invention, it relates to a method for measuring the activity of .alpha.-N-acetylgalactosaminyl transferase characterized by the use of said reaction solution as the substrate for the transferase.

Growing community of inventors

Osaka, Japan

Taiko Seno