Figure 1

Concentrations of methotrexate polyglutamates in red blood cells of patients with rheumatoid arthritis on methotrexate therapy.
MTX = methotrexate, PG = polyglutamate, RBC = red blood cells.
Concentrations of methotrexate polyglutamates in red blood cells of patients with rheumatoid arthritis on methotrexate therapy.
MTX = methotrexate, PG = polyglutamate, RBC = red blood cells.