Daicel Corporation

Tadashi Takeuchi

Shu Shimamoto

Hiroshi Ohno

Eiji Miyauchi

Taiji Yamabe

Shuuji Yoshioka

Akinobu Matsuyama

Hiroki Negishi

An object is to provide a Th1-increasing agent that can reduce constraints on storage conditions and feeding form and sufficiently increase Th1 at lower doses. A Th1-increasing agent containing a cellulose derivative as an active ingredient, the cellulose derivative having a degree of butyryl substitution of 0.3 or greater and 2.6 or less, and a total degree of substitution of 0.5 or greater and 2.8 or less.

Type 1 helper t cell-increasing agent, food and pharmaceutical

Object of the present invention is to provide an intestinal immune-enhancing agent that can sufficiently increase IgA in the intestinal tract with a low dose while maintaining an increased amount of IgA for an extended period of time. Provided is an intestinal immune-enhancing agent containing a cellulose acetate that has a total degree of acetyl substitution from 0.4 to 1.1.

Intestinal immune-enhancing agent, food product, and medicament

A low-loss optical fiber core for optical communications is covered with at least one layer of a polylaurolactam copolymer composed of 20 to 98 parts by weight of laurolactam and 80 to 2 parts by weight of a polyamide-forming monomer other than laurolactam, said copolymer having a melting point within a range of 100.degree. C. to 170.degree. C.

Fiber for optical communications

Growing community of inventors

Higashikurume, Japan

Tadashi Takeuchi