Pharmacology Abatacept, a new drug inhibiting co-stimulation is used for the treatment of: A Scleroderma B Sjogren syndrome C Rheumatoid arthritis D Systemic lupus erythematosus 💡 Explanation Abatacept, a new drug inhibiting co-stimulation is used for the treatment of: ✓ Correct Answer: C. Rheumatoid arthritis