Aninfectious molecular clone derived from DLA-ELAV was constructedand characterized. Three DLA-EIAV/ L chimeric viruses were constructed.

• 根据国外发表的马传染性贫血病毒核苷酸序列，推导出DLA-EIAV和L株全基因组核苷酸序列，经比较分析，DLA-EIAV株前病毒基因组全长8266个碱基，EIAV L株前病毒基因组共有8235bp。