Brazil's President Luiz Inacio Lula da Silva speaks during the ceremony presenting the FIFA World Cup Trophy at the Planalto Palace in Brasilia, Brazil February 26, 2026. REUTERS/Mateus Bonomi ...
Four different glial cell line-derived neurotrophic factor (GDNF)-family ligand (GFL)– receptor (GFRα) binding pairs exist, and they all signal through the transmembrane RET receptor tyrosine kinase.