| 摘要 |
PROBLEM TO BE SOLVED: To obtain a nerve-like projection extender that has a stronger nerve-like projection extension action at a low concentration in combination with a known nerve growth factor and has strong toxicity. SOLUTION: The nerve-like projection extension promoter comprises a salt of a heteropolyacid ion represented by general formula [(VO)<SB>3</SB>(XW<SB>9</SB>O<SB>33</SB>)<SB>2</SB>]<SP>12-n</SP>(I), (XW<SB>9</SB>O<SB>33</SB>)<SP>9-n</SP>(II), Y(Mo<SB>7</SB>O<SB>24</SB>) (III), Y(P<SB>2</SB>W<SB>18</SB>O<SB>62</SB>) (IV) or (XZ<SB>n</SB>W<SB>12-n</SB>O<SB>40</SB>)<SP>m-</SP>(V) and a nerve growth factor as active ingredients. COPYRIGHT: (C)2007,JPO&INPIT
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