TY - RPRT TI - Covalent coupling of neuralizing factors from Xenopus to Sepharose beads: no decrease of inducing activity. AU - J Born AU - P Hoppe AU - J Janeczek AU - H Tiedemann PY - 1986 DO - 10.1016/0045-6039(86)90066-7 UR - https://pubmed.ncbi.nlm.nih.gov/3757041/ ID - 3757041 ER -