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This is a PPT background picture of a colorful DNA gene chain;
Keywords: biological gene chain PowerPoint background picture, color DNA slide background picture
Complete framework thesis defense ppt template, directory: introduct...
Light elegant gray casual business style big picture background head...
Complete framework of the pharmaceutical industry year-end summary N...
Chinese style year-end summary next year's work plan ppt templat...
Looking up at the background of the visual business building, the cr...
Simple three-dimensional work report ppt template, light gray backgr...