Mechanistic Insights into &lt;i&gt;Lactobacillus harbinensis&lt;/i&gt; and Other Probiotics Regulating Lipid Metabolism in T2DM Mice via the PPARγ-LXRα-NPC1L1 Signaling Pathway Based on Multi-Omics Analysis. This evidence concerns the gene NPC1L1 and type 2 diabetes mellitus.