Composite polyacrolein-coated cellulose magnetisable particles: an "autoreactive" magnetisable solid-phase with superior buoyancy properties.

A composite solid-phase was prepared that combined the autoreactive properties of polyacrolein with the superior buoyancy of cellulose-based particles. The advantage of using such particles in immunoassays is demonstrated in a fluoroimmunoassay for human immunoglobulin G.