Assertion: ngf's effect | /r/HasProperty | diverse biological
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Source sentences:
text: NGF binds to at least two receptors expressed by neurons, tropomyosin receptor kinase A (TrkA) and the pan-neurotropin receptor p75/NTR, where it can have diverse biological effects, either promoting neuronal growth or causing neuron apoptosis, depending on whether the neuron also expresses the co-receptor, sortilin .