Titlebook: Lanthanides, Tantalum and Niobium; Mineralogy, Geochemi Peter M?ller,Petr ?erny,Francis Saupé Conference proceedings 1989 Springer-Verlag B

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P. J. Pollardms. Hh proteins are secreted ligands synthesized in discrete regions. The receptor of Hh is Patched (Ptc) and it is expressed in the cells close to the source of Hh. Ptc binds the ligand and transduces a signal which is modulated depending on the context and the concentration of Hh received. Hh and

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P. M?llerms. Hh proteins are secreted ligands synthesized in discrete regions. The receptor of Hh is Patched (Ptc) and it is expressed in the cells close to the source of Hh. Ptc binds the ligand and transduces a signal which is modulated depending on the context and the concentration of Hh received. Hh and