PrEP at the site of action in cisgender and transgender women: A pharmacology study of blood and rectal CD4+ lymphocytes. - Hastie E; Srivasta M; Cachay ER; Burke L; Gianella S; Rawlings S; Stanczyk FZ; Sykes C; Kashuba ADM; Blumenthal J; Cottrell ML (British journal of clinical pharmacology, 2026)