口吃较高的自愈率以及迁延不愈的口吃与可愈合口吃之间的病因差异使得口吃的主要病因很难解释。
The primary causes of stuttering and the high rates of spontaneous recovery, as well as the etiologic distinctions between persistent and resolved forms, have resisted explanation.
争光霉素或平阳霉素：用0.1%的生理盐水溶液作皮损内注射，每次总量限制在1毫升(1mg)，大多一次可愈。
The bleomycin or Pingyang mycin: injected in lesions with saline solution for 0.1% of the total, each limited to 1 ml (1mg), most of them once more.
该研究证实了渗透调节物质可促进体细胞胚的诱导：添加甘露醇或山梨醇后，由于细胞内物质积累，愈伤组织生长速率减慢。
The study confirmed the infiltration of regulators can promote the induction of embryonic cells: Add sorbitol or mannitol, due to accumulation of material within cells, callus growth rate slowed down.
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