70nm NHS-Activated Gold NanoUrchins Conjugation Kit (3 Reactions)Cytodiagnostics 70nm NHS activated Gold NanoUrchin Conjugation Kit have been optimized for high efficiency one step conjugation of proteins and other primary amine containing ligands to Cytodiagnostics Gold NanoUrchins. The kit contains ready to use pre made mixtures. No activation or manipulation of the gold nanourchins is required prior to conjugation, which often results in poor performing conjugates. Simply mix your protein with the pre activated