Japan Immunoresearch Laboratories Co., Ltd.

Kansai Medical University

Jimro Co., Ltd.

Nobuo Shimoda

Masakazu Adachi

Noriko Takahashi

Yoji Arata

Susumu Ikehara

Hiroshi Shirafuji

Shuji Nakamura

Katsuyuki Sado

Akihiro Aizawa

Hideko Ishihara

Katsunari Tezuka

Hiroyuki Hanzawa

The bone marrow harvesting drill of the invention includes an inner needle having a cutting edge at the tip thereof; a tubular mantle that receives the inner needle thereinto so that the inner needle and the tubular mantle are detachably attached; and a lock mechanism that prevents the axial rotation of the tubular mantle and the inner needle relative to each other; the inner needle having a groove formed at the tip thereof projecting from the tubular mantle for discharging bone scraps produced by the cutting edge at the tip of the inner needle; and the tubular mantle having a cutting edge formed at the tip edge thereof and a helical groove extending from the tip edge to at least part of the peripheral surface of the tubular mantle so as to be flush with the groove of the inner needle.

Bone marrow harvesting drill

A sugar chain of the following formula is disclosed. ##STR1## It can be prepared by separating glycoproteins from cell membrane components by using lectins which recognize the sugar chain, releasing the sugar chain structure from the glycoproteins, and purifying the released sugar chain. The sugar chain is useful for the diagnosis and treatment of cancer.

Sugar chain

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Takasaki, Japan

Nobuo Shimoda