preferred_name: PDGF binds to extracellular matrix proteins (Xenopus tropicalis)
preferred_name_lc: pdgf binds to extracellular matrix proteins (xenopus tropicalis)
label: PDGF binds to extracellular matrix proteins (Xenopus tropicalis)
label_lc: pdgf binds to extracellular matrix proteins (xenopus tropicalis)