Lipopolysaccharides (LPS), also known as lipoglyans and endotoxins, are large molecules consisting of a lipid and a polysaccharide composed of O-antigenm outer core and inner core joined by a covalent bond. They are found in the outer membrane of Gram-negative bacteria and elicit strong immune responses in normal mammalian cells. LPS from E. coli is particularly potent in systemic inflammation and have long been recongnized as a key factor in septic shock and also used in research to induce synthesis and secretion of growth promoting factors such as interleukins.
MD Biosciences provides lyophilized lipopolysaccharide (LPS) for in vivo and in vitro use. The LPS is isolated from Escherichia coli by a modification of the phenol extraction method of Westphal and Jann. This material has been extracted from bacterial cells walls of E. coli 055:B5. The endotoxin has been futher purified to remove traces of residual protein and nucleic acids, producing highly purified LPS. The LPS is essentially free of nucleic acid and protein and is chemically characterized with respect to their phosphate and KDO(2-keto-3-deoxyoctonate) contents. The highly purified LPS has been then re-extracted by the method of Manthey and Vogel to eliminate residual protein contamination.
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bhclna2so4nano3na2co3
chclnaohna2co3nacl
dba(oh)2nahco3alcl3nahso4
A、Na2CO3HClH2SO4NaNO3
B、K2CO3H2SO4HNO3BaCl2
C、HClHNO3AgNO3NaCl
D、NaOHFeCl3MgCl2BaCl2
A.H2SO4Na2SO4AgNO3BaCl2.
B.NaOHNa2CO3NaHSO4MgCl2
C.CaCl2NaNO3MgSO4BaCl2
D.HNO3KOHKClK2CO3
请问下有无同学需要H37RA的?我是做EAE模型的,上个月购买了BDDifco公司的H37RA(货号),因为购买的时候只能整盒6支购买,但我们用不了那么多,所以想问问有无同学需要的,100mg/支,800元/支或用等价试剂交换。地址广州。有需要的请私信,谢谢!
2.NaHCO3,Ba(OH)3,H2SO4
3.HCL,NaAlO2,NaHSO4
4.Ca(OH)2,Na2CO3,BaCO3
谢谢了
要原因
C.MgCl2溶液和氨水D.盐酸和NaAlO2溶液
为什么
暂无品牌问答