1. Low free serum histidine concentration in rheumatoid arthritis. A measure of disease activity;Gerber;J Clin Invest,1975
2. Decreased concentration of free histidine in serum in rheumatoid arthritis, an isolated amino acid abnormality not associated with generalized hypoaminoacidemia;Gerber;J Rheumatol,1975
3. Plasma levels of free amino acids in normal subjects compared with patients with rheumatoid arthritis;Borden,1950
4. Amino acid studies and clinical findings in normal adults and rheumatoid arthritis patients treated with ACTH;Borden;J Clin Invest,1952
5. Die Veränderungen freier Aminosäuren im Serum und im Harn von Kranken mit primär chronischer Polyarthritis;Trnavská;Z Rheumaforsch,1960