hsa-mir-1825: Hsa-mir-1825 is a microRNA that has been studied in relation to immune disorders such as systemic lupus erythematosus and rheumatoid arthritis [PMC7722869]. In a study comparing the expression levels of hsa-mir-1825 in parotid saliva and whole saliva from healthy controls, it was found that the expression levels of hsa-mir-1825 in parotid saliva were similar to those in whole saliva [PMC4636154]. This suggests that parotid saliva may be a reliable source for studying the expression of hsa-mir-1825. Furthermore, it has been observed that hsa-mir-1825 is down-regulated in immune disorders such as systemic lupus erythematosus and rheumatoid arthritis [PMC7722869]. This down-regulation may be associated with the pathogenesis of these disorders. The study provides evidence for the potential role of hsa-mir-1825 as a biomarker for immune disorders and highlights its importance in understanding the underlying mechanisms of these diseases [PMC7722869]. Further research is needed to fully elucidate the function and significance of hsa-mir-1825 in immune disorders [PMC7722869].