摘要:
A serum matrix or serum-derived composition which, after lyophilization and reconstitution, has a reduced optical density, evidencing improved homogeneity.
摘要:
The present invention relates to compositions comprising novel reduced cortisol conjugates, methods for their preparation and use in immunoassays for cortisol. In another aspect, it relates to conjugates of reduced cortisol as immunogens or haptens for eliciting anti-cortisol or anti-reduced cortisol antibodies.
摘要:
An enzymatic method for the analytical determination of creatine kinase in an aqueous liquid such as blood serum is described. The determination is made by measuring an optical density change using the reagents creatine phosphate, adenosine diphosphate, glycerol, glycerol kinase, .alpha.-glycerophosphate oxidase, a chromagen and a mercapto-containing creatine kinase activator. The mercapto-containing creatine kinase activator is added in encapsulated form or in low concentrations so as to preserve the activity of the chromagen.
摘要:
A process for the recovery of an intracellular enzyme from an aerobic soil microorganism is disclosed. The recovery method is carried out by(a) forming an aqueous suspension of microbial cells containing the desired intracellular enzyme,(b) disrupting the microbial cells in the suspension to release the enzyme from the cells, and(c) before, during, or after step (b) and prior to removal of disrupted microbial cells and other cellular components, introducing a water-miscible organic solvent into the suspension to form a mixture of the organic solvent and the enzyme-containing suspension.The desired enzyme is retained in the liquid phase of the mixture formed in step (c) while undesired cellular components such as other microbial cell proteins precipitate therefrom.