Conclusions: in vitro sinusoid endothelial cells could spontaneously immortalize. Some biological characteristics of immortalized cells changed.
结论：肝窦状内皮细胞在体外培养条件下自发永生化。
Some biological characteristics such as the tolerance to acidity, bile salt and antibiotic of Lacto-bacillus acidophilus LAJ90 was studied by using MRS medium.
采用MRS培养基，对嗜酸乳杆菌LAJ90菌株的耐酸、耐胆汁盐及耐药性等部分生物学特性进行了研究。
Some biological characteristics of the offsprings of wild tea seedlings in Suiningcounty were exploided and the phenomenon of their outstanding sympodial branches was emphatically studied.
考察了绥宁野茶实生苗后代的部分生物学性状，并着重探讨了强合轴分枝现象。
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