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。
Proinsulin intact (Control sera lyophilized 2 levels, 2 x 1 ml included)96 wells进口DRG原装
Progesterone, 17 a-Hydroxy- (salivary)96 wells进口DRG原装
Progesterone, 17 a-Hydroxy-96 wells进口DRG原装
Progesterone / 17a Hydroxy-Progesterone (serum) CLA96 wells进口DRG原装
Progesterone (serum) CLA96 wells进口DRG原装
Progesterone96 wells进口DRG原装
Pregnenolone96 wells进口DRG原装
Pregnenolon Serum Elisa96 wells进口DRG原装
PR3 IgG (CANCA) (Proteinase-3)96 wells进口DRG原装
Polyoma Virus (mouse) EcoElisa96 wells进口DRG原装
Polio Virus (rat) EcoElisa96 wells进口DRG原装
Polio Virus (mouse) EcoElisa96 Wells进口DRG原装
Pneumonitis Virus (mouse) EcoElisa96 wells进口DRG原装
Pneumonia Virus (rat) EcoElisa48 wells进口DRG原装
Pneumonia Virus (mouse) EcoElisa96 wells进口DRG原装
Pneumonia Virus (hamster) EcoElisa96 wells进口DRG原装
Pneumonia Virus (guinea pig) EcoElisa96 wells进口DRG原装
PMSG semiquantitative96 wells进口DRG原装
PMSG Horse (cassette)6 tests进口DRG原装
PMSG (Pregnant Mare Serum Gonadotropin)96 wells进口DRG原装
PMN Elastase (human) Elisa96 wells进口DRG原装
PLTP Acitivity (Plasma phospholipid transfer protein)100 tests进口DRG原装
PLGF (Placenta like growth factor)96 wells进口DRG原装
PIIANP Elisa (Type IIA Collagen N-Propeptide)96 wells进口DRG原装
Phospholipid Screen IgG/IgM, anti- Elisa96 wells进口DRG原装
Phosphatidyl Serine IgG/IgM, anti- Elisa96 wells进口DRG原装
Phosphatidyl Serine Ab IgG/IgM, Elisa96 wells进口DRG原装
Phosphatidyl Inositol IgG/IgM, anti- Elisa96 wells进口DRG原装
Phosphatidic Acid IgG/IgM, anti Elisa96 wells进口DRG原装
Phenylalanine neonate (without Membrane Plate)192 wells进口DRG原装
Phenylalanine neonate (with Membrane Plate)192 wells进口DRG原装
Phenylalanine (without Membrane Plate)960 tests进口DRG原装
Phenylalanine (with Membrane Plate)960 wells进口DRG原装
Phenylalanine (PKU) neonatal Screening Assay (5 plates x 96)480 wells进口DRG原装
Phenylalanine (PKU) neonatal Screening Assay (25 plates x 96)2400 wells进口DRG原装
PGE2 Enzyme Immunoassay High Sensitive96 wells进口DRG原装
Pepsinogen II Elisa96 wells进口DRG原装
Pepsinogen I Elisa96 wells进口DRG原装
PCP (phenyclidine) (dipstick) (FDA) min. 500 testseach进口DRG原装
PCP (phenyclidine) (cassette) (FDA) (25 tests per kit) min. 500 teststest进口DRG原装
PCB, Mechanism (for ELM2624 Multiwash System)1进口DRG原装
PCB, Main for 2600 (for ELM2624 Multiwash System)1进口DRG原装
红霉素链霉菌使用说明书Parvovirus-1 (rat) EcoElisa96 wells进口DRG原装
Parvovirus-1 (mouse) EcoElisa96 wells进口DRG原装
Parvovirus IgM (w/o controls)96 wells进口DRG原装
Parvovirus IgG (w/o controls)96 wells进口DRG原装
Parvovirus dog/cat24 tests进口DRG原装
Parvovirus B 19 IgM96 wells进口DRG原装
Parvovirus B 19 IgG96 wells进口DRG原装