The term "endogenous gene" refers to a gene that is naturally present within an organism's genetic makeup. It is a gene that belongs to the organism itself, not introduced from an external source. Full definition
Kim, Jung - Sik, et al. «Epitope tagging of endogenous genes in diverse human cell lines.» (blog.addgene.org)
Efforts to tag endogenous genes for proteins in these compartments using CRISPR systems should strongly consider using moxFPs over standard FPs for the reasons listed above. (blog.addgene.org)
In previous studies, Chen - Yu Zhang's group has reported a striking finding that plant miRNAs are ingested from plant diets and pass through the gastrointestinal tract, enter into the blood, accumulate in tissues and regulate endogenous gene expression in animals. (sciencedaily.com)