<

正

>

Effects of Lycium barbarum polysaccharide（LBP）

Astragalus polysaccharide（APS）

polysaccharide of Acanthopanax senticosus（PAS）and polysaccharide of bacteriallipopolysaccharide（PS）on the induction of lymphokine-activated killer（LAK）cells fromC57BL/6 murine splenocytes were studied using [

125

I]UdR release assay.The fourpolysaccharides alone were shown to induce no cytotoxicity.When combined with humanrecombination interleukin-2（rlL-2）

they augmented LAK cell activities in adose-dependent manner

most markedly at 0.01～0.1 mg·ml

-1

for LBP

0.01 mg·ml

-1

forAPS and PAS

and 0.01 μg·ml

-1

for PS.They increased LAK cell activity in a shortrange of rIL-2 concentrations(250～1000U·ml

-1

).They were shown to inhibit LAK cellactivity when used beyond the suitable dosage.