摘要:
The invention relates to a method and novel reagents for detecting a ligand in a biological sample. In the method, the sample is combined with (i) an enzyme or an enzyme bound to a first macromolecular compound, (ii) substrate for the enzyme, and (iii) an antibody complex comprising anti-ligand bound to anti-enzyme and a second macromolecular compound bound to either one or both of the anti-ligand and anti-enzyme. The activity of the enzyme varies as a function of the unknown amount of ligand contained in the biological sample.
摘要:
A biologically active composition comprising an immobilized phase comprising an antigen or an antibody, and an immobilized phase comprising an enzyme, an enzyme inhibitor or activator, and a method of measuring antigen or antibody using the same. According to the method of the invention, antigen with antibody can be detected in a simple procedure and high sensitivity.
摘要:
Disclosed are a fused DNA sequence which comprises a DNA sequence of a heat-resistant protein, fused directly or indirectly to a DNA sequence coding a selected protein or peptide, a fused protein expressed from the fused DNA sequence, and a method for expressing the fused protein.
摘要:
Derivatives of dipeptide having the following general formula and their use as substrates for colorimetrically or spectrophotometrically measuring the activity of carboxypeptidase A: ##STR1## wherein X is OH in ortho or para position, or NH.sub.2 or CH.sub.3 O in para position, Y is ##STR2##