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. 2022 Feb 10;9:810462. doi: 10.3389/fnut.2022.810462

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Copyright © 2022 Guo, Huang, Zhao, Zhang, Ji and Ma.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Effect of pine needle extract (PNE) supplementation on serum lipid metabolism indices TC (A), TG (B), HDL-C (C), and LDL-C (D) of laying hens. TC, total cholesterol; TGs, triglycerides; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol. n = 6 per group, data are expressed as means ± SD.