Erythrocyte-potassium level in rheumatoid arthritis.
D001168:Arthritis; D001172:Arthritis, Rheumatoid / Q000097:blood*; D004912:Erythrocytes; D006801:Humans; D011188:Potassium / Q000097:blood*
D011188:Potassium
ARTHRITIS, RHEUMATOID/blood in; POTASSIUM/in blood