[Simple method of detection of Fc receptor sites on cells].

A bacterial adhesion technique for identification of Fc-receptor bearing cells is based on the ability of Staphylococcus aureus, Cowan 1 strain, to form rosettes with cells previously treated with immune complexes or heat aggregated Ig G. The new technique is distinguished from other Fc-receptor detection methods by its simplicity and ease of detection of both immune complexes and aggregated IgG-binding cells.