中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-硝基苯基-2,3,4,6-四乙酰基-β-D-半乳吡喃糖苷 | 4-nitrophenyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranoside | 2872-66-4 | C20H23NO12 | 469.402 |
4-硝基苯基-α-D-吡喃半乳糖苷 | 4-nitrophenyl α-D-galactoside | 7493-95-0 | C12H15NO8 | 301.253 |
2,3,4,6-O-四乙酰基-D-半乳糖 | 2,3,4,6-tetra-O-acetyl-α/β-D-galactopyranose | 47339-09-3 | C14H20O10 | 348.307 |
beta-D-半乳糖五乙酸酯 | β-D-galactose peracetate | 4163-60-4 | C16H22O11 | 390.344 |
1,2,3,4,6-D-葡萄糖五乙酸酯 | D-galactose pentaacetate | 25878-60-8 | C16H22O11 | 390.344 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2,3,4,5-tetra-O-acetyl-p-nitrophenyl-α-D-galactopyranoside | 152704-98-8 | C20H25NO10 | 439.419 |
4-硝基苯基-α-D-吡喃半乳糖苷 | 4-nitrophenyl α-D-galactoside | 7493-95-0 | C12H15NO8 | 301.253 |
4-硝基苯基-D-吡喃葡糖苷 | 4-nitrophenyl-β-D-galactopyranoside | 3150-24-1 | C12H15NO8 | 301.253 |
It has been demonstrated that many multiples of minimal doses of Bacillus typhosus reacting factors can be neutralized by specific immune sera.
The potency of a given serum can be conveniently titrated against increasing amounts of reacting factors.
If the immune serum is diluted or if the amount of the reacting factors is too large for a given amount of serum, there is obtained neutralization but only irregularly.
Normal and heterologous sera (therapeutic meningococcus and erysipelas horse sera) free of normal agglutinins or possessing normal agglutinins of a low titer (1:16) for Bacillus typhosus are not able to neutralize the reacting factors. There is obtained questionable neutralization with a serum possessing normal Bacillus typhosus agglutinins in dilution 1:64.
The titer of the neutralizing antibodies increases in the course of immunization.
Immune sera exercise a definite protection against the mortality induced by intravenous injection of Bacillus typhosus culture filtrates.