L Catani, L Gugliotta, M Motta, P Tazzari, S Baravelli, S Tura. Effect of PEG-recombinant human megakaryocyte growth and development factor (PEG-rHuMGDF) on growth and differentiation of the HEL cell line. Haematologica 1998;83(5):385-391; https://doi.org/10.3324/%x.