产生菌苗的

Calli of Anthurium andraeanum 'Jolanba'derived from leaves of in vitro plantlets were cultured with three different treatments to observe their redifferentiation behaviors , and their physiological and biochemical features are discussed. The results went as followed.

对花烛 'Jolanba'无菌苗叶片诱导产生的愈伤组织进行3 种不同的培养处理，观察其再分化表现，并探讨了3 种继代培养愈伤组织的生理生化特点。

Thus a strong resistible barrier was established in the animal.

表明弱毒苗和弱菌苗通过消化道粘膜免疫均可导致蛋鸡产生较多的SIgA阳性细胞，从而使消化道和呼吸道形成较强的免疫防御屏障。

The results showed that the population administered with free adjuvant cholera vaccines,both low dose group and common dose group,occurred the weak adverse reaction with 10￣25% rate.The reaction rates between two dose groups of the same vaccine have not significant difference;The reaction rate of the first inoculation(19￣25%) is higher than those of the second inoculation(10￣15%)(P 05);The inoculating local reaction is very light ,only the very few subject occurred the scleroma with 15 mm of diameter.The reaction of aluminum absorbed cholera vaccine is slightly stronger than those of other groups.

结果表明，不加铝佐剂的O139型霍乱菌苗及O1群霍乱菌苗，不论是低剂量组（两剂全程接种45亿菌体）抑或常剂量组（全程接种90亿）接种人群均可产生10～25％的体温呈轻度升高的弱反应，并且同种菌苗的两剂量组的反应率无显著差异；第一剂接种的反应率（19～25％）较第二剂接种的（10～15％）高，P＜0.05；接种局部反应轻微，只有个别受试者出现直径小于15mm的硬结；加佐剂的O1群吸附霍乱菌苗的反应较其它组强。

Calluses were induced from hypocotyl segments of seedlings of Alhagi pseudalhagi on MS medium supplemented with 1. 5-2. 0mg/L 2, 4-D and 0.5-1. 0mg/L 6-BA.

骆驼刺种子无菌苗下胚轴切段在含1.5-2.0mg／L2，4-D和0.5-1.0mg/L6-BA的MS培养基中可100％诱导产生愈伤组织，并在相同培养基上进行继代培养。

Practical and available way to controlthe spread of cholera. Live vaccine mimics the natural infection. which can colonizes and propogates on the mucosa of the small intestine. and stimulating the mucosal immune system and inducing long lasting. efficient and stable immunity.

活菌苗因模拟霍乱自然感染过程，可在肠道内定居增殖，刺激肠道粘膜产生分泌性抗体，获得的免疫力有效而稳固，持续时间长而具有独特优势。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。