[Study of the specific antigen of amyloid fibrils in secondary amyloidosis].

Amyloid fibrillae yere isolated from the spleen of a patient with secondary amyloidosis and their antigenic specificity was demonstrated. Pure antibody to the specific amyloid antigen was obtained. The possibility of mmunomorphological detecton of amyloid in tissues was proven. Amyloid protein was found to be absent in normal organs of adults and embryos.