Abstract
Advancements in imaging technologies, especially approaches that allow the imaging of single RNA molecules, have opened new avenues to understand RNA regulation, from synthesis to decay with high spatial and temporal resolution. Here, we describe a protocol for single-molecule fluorescent in situ hybridization (smFISH) using three different approaches for synthesizing the fluorescent probes. The three approaches described are commercially available probes, single-molecule inexpensive FISH (smiFISH), and in-house enzymatically labeled probes. These approaches offer technical and economic flexibility to meet the specific needs of an experiment. In addition, we provide a protocol to perform automated smFISH spot detection using the software FISH-quant.
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