Core Viewpoint - The article discusses the development of a novel super-resolution microscopy technique called mirror-enhanced 4Pi single-molecule localization microscopy (me4Pi-SMLM), which simplifies the traditional 4Pi-SMLM system while maintaining high precision in three-dimensional imaging [3][4]. Group 1 - The traditional 4Pi-SMLM technology faces a core limitation of anisotropic resolution, where axial resolution is typically 2-3 times worse than lateral resolution, making it difficult to accurately resolve complex three-dimensional cellular structures [2]. - The new me4Pi-SMLM technique replaces the second objective lens with a mirror, significantly simplifying the system structure and reducing hardware costs and maintenance difficulties while achieving comparable high-precision three-dimensional imaging capabilities [3][4]. - The core innovation of me4Pi-SMLM lies in its design, which uses a single objective lens and a mirror to create controllable interference patterns, enhancing axial localization precision by approximately five times [7]. Group 2 - The research team validated the performance of me4Pi-SMLM by imaging typical subcellular structures such as microtubules and nuclear pore complexes, demonstrating its superior three-dimensional super-resolution imaging capabilities [9]. - The technique allows for dual-color imaging, enabling the observation of spatial relationships between different cellular structures, and has been successfully applied to thicker samples with accurate localization across larger depth ranges [10]. - me4Pi-SMLM is not limited to fixed samples; it can also be applied to live-cell imaging, three-dimensional single-molecule tracking, and thick tissue imaging, achieving resolutions of 40-60 nanometers in live cells and 6 nanometers in single-molecule tracking [12]. Group 3 - The significance of this research lies in its ability to make high-precision three-dimensional super-resolution imaging more accessible, reducing system complexity and maintenance challenges while offering compatibility and upgrade potential for existing 3D-SMLM platforms [12]. - The advancements provided by me4Pi-SMLM are expected to broaden the application of high-precision imaging in various fields of life sciences, including cell biology, neuroscience, and disease mechanism research [12].