Accumulating evidence has shown that low-power laser irradiation (LLI) affects cell proliferation and survival. but little is known about LLI effects on neural stem/progenitor cells (NSPCs). Here we investigate whether transcranial 532 nm LLI affects NSPCs in adult murine neocortex and in neurospheres from embryonic mice. We applied 532 nm LLI (Nd:YVO4. https://www.hongmacro.com/product-category/hair-styling-products/