Neurotrophic effects() A: refer<br/>to the influence of the nerve on the functional activities of the<br/>dominating tissue B: achieved by releasing the neurotransmitter or neuromodulator through<br/>the nerve endings C: rely<br/>on the regular release of neurotrophic factors D: can<br/>be blocked by continuous application of local anesthetics E: It is<br/>not easy to detect, and it can be clearly displayed after cutting off<br/>the nerve