We have a Nikon system which combines two different methods of super resolution imaging: Structured Illumination Microscopy (SIM) and Stochastic Optical Reconstruction Microscopy (STORM). SIM is compatible with many commonly used fluorescent dyes and fluorescent proteins, but 'only' offers twice the resolution achievable with standard fluorescence microscopy. STORM requires the use of specific fluorophores and a special imaging buffer, but can achieve an order of magnitude enhancement in the resolution over standard fluorescence microscopy. Both methods have their strengths and weaknesses, but having the two options available means we can apply the best approach to a specific problem, or combine the techniques for a complimentary approach.
Structured Illumination Microscopy
405, 440, 488, 561 & 635 nm excitation
60x water immersion, 100x oil immersion
2D-SIM, 3D-SIM, TIRF SIM
Theoretical lateral resolution in the range of 120-180 nm
Stochastic Optical Reconstruction Microscopy
N-STORM
dSTORM
PALM
Theoretical lateral resolution in the range of 20-50 nm