Blood-catalyzed n-doped polymers for reversible optical neural control. - Samal, Sanket; Xiao, Shulan; Nelson, Samantha; Kolhe, Om; Khan, Hammad F.; Matin, Meisam Habibi; Lee, Won-June; Ahmed, Mustafa; Wang, Decheng; Wang, Tianqi; Pikes, Tyler; Scott, Alicia N.; et al. (Science, 2026)