A specific NPA N-1-naphthylpathalamic acid)-binding site with high affinity was found in the membrane component of Acer pseudoplatanus L. suspension culture cells.

• 在桐叶槭(Acer pseudoplatanus L.；) 悬浮培养细胞的膜组分上有 NPA(N-1-naphthylpathalamic acid)专一结合位点。