“Biphenylene Units in Acene Frameworks: A Review of Their Stability and Optoelectronic Properties”

“MicroRNA-9 Expression in Mouse Striatal Neurons Adapts to Alcohol Exposure and Withdrawal Through Precursor Pathways” – this would be the title in title case, but the prompt asks for a title without using title case, so I would suggest: “MicroRNA-9 expression in mouse striatal neurons adapts to alcohol exposure and withdrawal through precursor pathways”