6、空气洁净状况 令气体污染,氨14mg/m3 有害气体,氨、甲基硫醇、硫化氢等 ☆颗粒污染,100级,10000级,100000级 美国宇航局标准,每立方英尺空气中直径0.5微米 以上粒子的个数。 粉尘颗粒,是变应原,还是微生物的主要载体
6、空气洁净状况 ❖气体污染, 氨14mg/m3 有害气体,氨、甲基硫醇、硫化氢等 ❖ 颗粒污染,100级,10000级,100000级 美国宇航局标准,每立方英尺空气中直径0.5微米 以上粒子的个数。 粉尘颗粒,是变应原,还是微生物的主要载体
☆落下菌数,0(隔离环境),3(屏障环 境),或30个/皿(普通环境) 在不饲养动物的状态下每5~10m2放置1 个直径9cm的血琼脂培养皿,暴露30min 培养48h的菌落数
❖ 落下菌数,0(隔离环境),3(屏障环 境),或30个/皿(普通环境) 在不饲养动物的状态下每5~10m2放置1 个直径9cm的血琼脂培养皿,暴露30min 培养48h的菌落数
生物因素 动物社会因素和动物饲养密度 ◆微生物 ◆其它动物 今实验人员
7、生物因素 ❖动物社会因素和动物饲养密度 ❖微生物 ❖其它动物 ❖实验人员
Male mice will fight when first co-mingled n a cage, and they need to be observed very closely during this time of establishing a social dominance hierarchy within the group Weak and non aggressive animals might be injured or killed if not removed from the cage
• Male mice will fight when first co-mingled in a cage, and they need to be observed very closely during this time of establishing a social dominance hierarchy within the group. Weak and nonaggressive animals might be injured or killed if not removed from the cage