Fig. 3
From: Unveiling ncRNA regulatory axes in atherosclerosis progression
Role of Alu elements in the regulation of miRNA activity. Shown are nuclear Alu elements transcribed from its own RNA pol III promoter in the case of being independent transcriptional units (left), or from an RNA pol II promoter in the case of being integrated inside another gene. In both cases these can behave as miRNA sponges by interacting with miRNAs. Some individual Alu elements can retroinsert into intergenic regions or inside other transcriptional units (taken from [1])