Evidence for an absence of cross‐reactivity between human β ‐microglobulin and human IgG allotypes and subclasses

Abstract
Six β‐microglobulins were isolated from the urine of six patients with renal tubular dysfunction. Cross‐reactivity between these β ‐microglobulins and antigenic determinants of different IgG allotypes and subclasses was investigated. No evidence of cross‐reactivity was found. Some hypotheses are discussed concerning these results.