A gene encoding Trichosanth in (TCS)was amplified by means of DNA polymerase chain reaction(PCR) and cloned from the genomic DNA of Trichosanthes kirilowii. Its DNA sequence has been determined.

• 本文应用DNA多聚酶链式反应（PCR）技术，从栝楼基因组DNA中扩增并克隆了天花粉蛋白（TCS）基因。