TY - RPRT TI - Reversible CD28 checkpoint modulation by cyclic peptides outperforms biologic blockade under exposure-limited conditions AU - Kuncewicz, K. AU - Upadhyay, S. AU - Ge, Y. AU - Duan, H. AU - Gabr, M. PY - 2026 DO - 10.64898/2026.04.09.717469 UR - https://www.biorxiv.org/content/10.64898/2026.04.09.717469v1 ID - 10.64898/2026.04.09.717469 ER -