Cellular Cargo Delivery: Toward Assisted Fertilization by Sperm-Carrying Micromotors Medina-Sánchez, Mariana ; Schwarz, Lukas ; Meyer, Anne K. ; Hebenstreit, Franziska ; Schmidt, Oliver G. Abstract Publication: Nano Letters Pub Date: January 2016 DOI: 10.1021/acs.nanolett.5b04221 Bibcode: 2016NanoL..16..555M