TY - RPRT TI - Disulfide spacer between methotrexate and poly(D-lysine). A probe for exploring the reductive process in endocytosis. AU - W C Shen AU - H J Ryser AU - L LaManna PY - 1985 UR - https://pubmed.ncbi.nlm.nih.gov/4030773/ ID - 4030773 ER -