protein pleiotrophin NEGF1 HBGF-8 Category=gene. HBNF heparin-binding neurite outgrowth-promoting factor 1 A protein that is a translation product of the human PTN gene or a 1:1 ortholog thereof. HBNF-1 PTN HB-GAM heparin-binding neutrophic factor HBNF1 heparin-binding growth-associated molecule OSF-1 protein heparin-binding growth factor 8 HBBM PR:000013438 heparin-binding brain mitogen osteoblast-specific factor 1