先使微生物在极低温度(-70℃左右)下快速冷冻,然后在减压下利用升华现象除去水分(真空干燥)。有些方法如滤纸保藏法、液氮保藏法和冷冻干燥保藏法等均需使用保护剂来制备细胞悬液,以防止因冷冻或水分不断升华对细胞的损害。保护性溶质可通过氢和离子键对水和细胞所产生的亲和力来稳定细胞成分的构型。保护剂有牛乳、血清、糖类、甘油、二甲亚砜等。
Estrone Serum96 wells进口DRG原装
Estrone Saliva96 wells进口DRG原装
Estrone Elisa96 wells进口DRG原装
Estrone96 wells进口DRG原装
Estriol, total96 wells进口DRG原装
Estriol, Free (saliva)96 wells进口DRG原装
Estriol Saliva96 wells进口DRG原装
Estriol (E3), Free96 wells进口DRG原装
Estradiol US (ultra sensitive)96 wells进口DRG原装
Estradiol Saliva (E2)96 wells进口DRG原装
Estradiol (serum) CLA96 wells进口DRG原装
Estradiol96 wells进口DRG原装
Erythropoietin (Epo) - single-step sandwich assay -96 wells进口DRG原装
Epstein Barr Virus VCA IgM96 wells进口DRG原装
Epstein Barr Virus VCA IgG96 wells进口DRG原装
Epstein Barr Virus EBNA-1 IgG96 wells进口DRG原装
Epstein Barr Virus EBNA IgA*, Elisa96 wells进口DRG原装
Epstein Barr Virus EA IgM, Elisa96 wells进口DRG原装
Epstein Barr Virus EA IgG96 wells进口DRG原装
Epstein Barr Virus (EBV-VCA) IgM96 wells进口DRG原装
Epstein Barr Virus (EBV-VCA) IgG96 wells进口DRG原装
Epstein Barr Virus (EBV-EBNA) IgM96 wells进口DRG原装
Epstein Barr Virus (EBV-EBNA) IgG96 wells进口DRG原装
Entamoeba histolytica IgG (Amebiasis) Elisa96 wells进口DRG原装
Endothelin-1 (H - R - M - B - P - C - R)96 wells进口DRG原装
Endothelin 2 (ET-2) (human - canine)96 wells进口DRG原装
Encephalitozoon cuniculi (rat) EcoElisa96 wells进口DRG原装
Encephalitozoon cuniculi (mouse) EcoElisa96 wells进口DRG原装
Encephalitozoon cuniculi (hamster) EcoElisa48 wells进口DRG原装
Encephalitozoon cuniculi (hamster EcoElisa96 wells进口DRG原装
Encephalitozoon cuniculi (guinea pig) EcoElisa96 wells进口DRG原装
ENA-6-Screen96 wells进口DRG原装
ENA-6-Profile6x16 tests进口DRG原装
ENA-4-Profile Elisa4x24 tests进口DRG原装
ENA Screen (entractable nuclear antigen)96 wells进口DRG原装
ENA Combi96 wells进口DRG原装
ElizaMat ELM 8884 fully automated 4 Microplate Elisa Reader进口DRG原装
ElizaMat ELM 8882 fully automated 2 Microplate Elisa Reader进口DRG原装
ElizaMat BCR (Bar Code Reader for ElizaMat ELM 8884)进口DRG原装
ElizaMat BCR (Bar Code Reader for ElizaMat ELM 8882)进口DRG原装
Elizamat 3932 Microplate Reader w. on board printer (supports Chinese)each进口DRG原装
EGF (human) (Epidermal Growth Factor)96 wells进口DRG原装
EDDP, human (Ethylidine, Dimethyl, Diphenylpyrrolidine) min. 1000 testsstrip进口DRG原装
EDDP, human (Ethylidine, Dimethyl, Diphenylpyrrolidine) min. 1000card进口DRG原装
玫瑰色链霉菌使用说明书Ectromelia Virus (mouse) EcoElisa96 wells进口DRG原装
Echinococcus granulosus IgG96 wells进口DRG原装
E. Coli Verotoxin 1+2 Ag (stool) Elisa96 wells进口DRG原装
Drugs of Abuse Control negative, Level 1 (6 x 18 mL)6x18mL进口DRG原装
Drugs of Abuse Control low challenge to immunoassay cutoff, Level 26x18mL进口DRG原装