Fig. 4. In vivo DNA HCR enhances the fluorescence intensity of labeling. (a) Fluorescence images of 2 dpf zebrafish embryos that were first decorated with U4T28, followed by 3 times washing with egg water, incubation with M1-FAM for 1 h and M2 for another 1 h. (b) Only FAM fluorescent labeled M1 (M1-FAM) was added after anchoring of U4T28 on the fish and washing three times with egg water. Green channel: M1-FAM.
