蓝氏贾第鞭毛虫滋养体染色体扫描电镜观察

目的电镜观察蓝氏贾第鞭毛虫滋养体的染色体数目及形态。方法用改良TYI-S-33培养基培养贾第虫滋养体。制备分散度较好的染色体玻片标本,对玻片标本进行扫描电镜常规处理,扫描电镜观察。结果在扫描电镜下观察到了蓝氏贾第鞭毛虫滋养体的染色体,染色体数目为2n=10条,1号染色体为亚中央着丝粒染色体,2号、3号、4号、5号为端着丝粒染色体。结论通过电镜观察认为蓝氏贾第鞭毛虫滋养体的染色体核型公式为2n=10=2sm+8t。

Scanning electron microscope observation on chromosome of Giardia lamblia trophozoite

In order to observe the quantity for chromosome and shape of Giardia lamblia trophozoites under scanning electron microscopy,trophozoites were cultured in modified TYI-S-33 medium at 37℃ and chromosome slides with better dispersion were prepared.Chromosome on the conventional treatment processed slide was observed under scanning electron microscopy.The chromosome of Giardia lamblia trophozoite was observed with a quantity of 2n=10.The pair 1 was submetacentric chromosome,while the pair 2,3,4 and 5 were all telocentric chromosomes.It＇s demonstrated that the karyogram formula is 2n=10=2sm＋8t under scanning electron microscope.