优质大粒葡萄新品种'峰后'

从‘巨峰’的实生后代中选育出新品种‘峰后’，平均单粒质量12．78g,可溶性固形物含量17．87％，酸含量0．57％，口感甜、脆；果面鲜紫红色，果肉硬度0．5kg/mm^2；生长势强，抗病力强。

'Fenghou'-A Grape Variety of Good Quality and Large Berry

AIM: To deplore the adjustion of whole peptidoglycan of bifidobacterium bifidum to functions of macrophages.METHODS:Levels of interleukin 6, interleukin 12 produced by peritoneal macrophages of nude mice was detected by ELISA method, and the content of nitric oxide (NO) was detected by using Griess reagent, after whole peptidoglycan were injected into nude mice peritoneally. RESULTS:The content of interleukin 6, interleukin 12 and NO secreted from peritoneal macrophages of nude mice in the whole peptidoglycan injection group was 732.54±190.30(pg/mL)、816.37±96.40(pg/mL) and 48.90±6.51(μmol/L) respectively.It was 303.78±171.75(pg/mL), 510.27±123.46(pg/mL) and 30.67±12.83(μmol/L) respectively in the control group. In view of the content of interleukin 6, interleukin 12 and NO, there existed significant difference when whole peptidoglycan injection group was compared with control group(P< 0.01).CONCLUSION:The result suggested that whole peptidoglycan of bifidobacterium bifidum could activate macrophages to secrete large amount of interleukin 6, interleukin 12 and NO. These cytotoxicity effectors mediated many kinds of important physiological functions of bifidobacterium.