Question
What is autonomic nervous system? What is its function?
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| Substances obtained by microbial processing | Roles |
| (1) Glutamic acid, Tryptophan, ________ | (a) __________ |
| (2) Polysaccharides, glycolipids | (b) __________ |
| (3) Lutein, Xanthenes, ___________ | (c) __________ |
| (4) Xylitol, _________ | (d) Artificial sweetner (low calorie) |