Integrated services digital network - call forwarding no reply supplementary service - functional capabilities and information flows ; english version ets 300205 : 1994 综合服务数字网络.转呼无应答的补充业务.功能效率和
900 bp promoter - directed gus expression was highly induced by sa and bth , while the 603 bp promoter , whether mutated or not , did not respond to sa and bth induction , which indicated that the element in response to sa and bth lied among 575 ~ 872 bp from transcription start site 全长900bp启动子能够应答sa和bth的诱导，而603bp长的启动子无论突变与否对sa和bth均无应答，证明sa和bth的应答区域在克隆启动子的转录起始位点上游575 872bp之间。
