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1.Mice were abdominally injected with a adaptive dose of 3.7×10~2--3.7×10~5 Bq/gbw HTO, and then exposed to a challenge dose of 1.5 Gy of~(60)Coγ-rays. In bone marrow cells that received both the adaptive and challenge doses.
小鼠腹腔注射3.7×10~2—3.7×10~5Bq/gbw HTO(氚水)作为适应剂量,随后全身照射1.5Gy~(60)Coγ射线作为激发剂量,观察对骨髓细胞染色单体畸变率的影响。收藏指正
2.Results showed that F1 antibody in serum peaked rapidly af-ter fundamental immunity 20 dyas with GMT of 114,and the bacterin induced enough immunogenicity for all the guinea pigs against the challenge exposure with 1 billion cells of the virulent strain 141 with a protective rate of 100%. The challenge dose,with better immunizing effect,was 105 times more than that in the immuni-ty test of biological product rules.
结果表明，加强免疫20天后血清F1抗体迅速达到高峰，几何平均滴度为114，至4个月时尚能100％保护豚鼠耐受强毒鼠疫菌141株10亿菌体的攻击，它比生物制品规程中免疫力试验要求攻击的菌量大105倍，仍然获得较好的免疫效果。收藏指正
3.Methods Healthy human PMNs,isolated by discontinuous density-gradient centrifugation,were divided into 6 groups:normal control,LPS group,Dex1 group (high dose dexamethasone challenge),Dex2 group (low dose dexamethasone challenge),LPS+Dex1 group and LPS+Dex2 group.
方法采用不连续密度梯度离心法分离人PMNs,并分6组,分别为正常对照组,LPS组,大剂量地塞米松(Dex1)组,小剂量地塞米松(Dex2)组,大剂量地塞米松治疗(LPS+Dex1)组,小剂量地塞米松治疗(LPS+Dex2)组。收藏指正
4.Methods: One LD 50 dose of LPS was injected to challenge mice, and different dose of BPI modeling peptides was injected within 20 s after the challenging and then 5 mg·kg -1 /10 mg·kg -1 dose of BPI modeling peptides was injected pre/post the challenging respectively, to observe the protective or preventive effects of BPI modeling peptides on the LPS challenged mice.
方法：以一个LD50的LPS（20mg·kg－1）静脉注射攻击小鼠，分别于LPS攻击后20s内静脉注射不同剂量的BPI模拟肽；收藏指正
5.The response of cell division in the “Page”(Citrus reticulata Blanco×C.grandis Osb.cv.Page) protoplasts from embryonic callus to radiation challenge varied with the intensity of the X ray dose charged.
用1161C／kg软X?射线辐射“Page”桔柚（CitrusreticulataBlanco×C．grandisOsb．cv．Page）胚性愈伤组织分离的原生质体，经－11℃低温选择后，将存活的原生质体培养再生植株。收藏指正
6.Results Before high dose LPS challenge, TNF? α production in BALF and CINC mRNA expression in lung tissue was little in both groups. In NC group,the level of TNF?
结果　NC组注射LPS(6mg/kg)前 ,BALF中有少量TNF α ,肺组织有微量CINCmRNA表达 ;收藏指正
7.A dose of 0.6ml,2ml and 4ml of the vaccine protected mice, rabbits and pigs respectively against challenge of 1 MLD of toxin of the type culture of C. welchii type A.
疫苗0．6ml、2ml和4ml的剂量可以分别保护小鼠、兔和猪抵抗标准A型魏氏梭状芽孢杆菌毒素1MLD的攻击。收藏指正
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