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NGF (neural growth factor)

a) Promotes the growth and maintenance of certain neurons
b) Inhibits nerve regeneration after injury
c) Has no role in neural development
d) Is a neurotransmitter

User Blaa
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Final answer:

NGF (neural growth factor) promotes the growth and maintenance of certain neurons and is involved in neural development. It is not a neurotransmitter and does not inhibit nerve regeneration after injury.

Step-by-step explanation:

NGF (neural growth factor) promotes the growth and maintenance of certain neurons. It is a protein molecule and neuropeptide that acts as a chemical signal, released from the synaptic end bulb of a neuron to cause a change in the target cell. NGF is not a neurotransmitter and it does not inhibit nerve regeneration after injury. Instead, it plays a crucial role in neural development and encourages the growth and survival of nerve cells.

User Wim Ten Brink
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