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BAC DNA Isolation from 200 ml Cultures by a Cleared Lysate Method

by centrifugation at 5K rpm for 15 minutes in a 250 ml bottle in the RC5-B using the GSA rotor, cell pellets should be frozen and stored at -70 degrees C. 2、Prior to use, the cells from 200 ml growth were thawed and resuspended in 8 ml of just 10 mM of EDTA, pH

RNA Purification Protocol for 100-200 mg of Animal Tissue

. Storage at -70°C. Fresh tissue can also be used. Work quickly and keep the sample on ice at all times. 2. Add 100-200 mg frozen ground tissue or fresh tissue to a 15 mL centrifuge tube containing 6 ml RCL Buffer. Homogenize the sample using 5-10

人S蛋白100B(S-100B)酶联免疫分析

）。仔细收集上清。检测细胞内的成份时，用 PBS （ PH7.2-7.4 ）稀释细胞悬液，细胞浓度达到 100 万 /ml 左右。通过反复冻融，以使细胞破坏并放出细胞内成份。离心 20 分钟左右（ 2000-3000 转 / 分）。仔细收集上清。保存过程中如有沉淀形成，应再次离心。 5. 组织标本：切割标本后，称取重量。加入一定量的 PBS ， PH7.4 。用液氮迅速冷冻保存备用。标本融化后仍然保持 2-8℃ 的温度。加入一定量的 PBS （ PH7.4 ），用手工或匀浆器将标本匀浆