Fig. 1. Schematic of quantitative polarization imaging setup

Fig. 2. Quantitative polarization imaging method. (a) Schematic of the polarization orientation and light propagation direction; (b) calculation results of detected light intensity dependent on the rotation angle of the orthogonal polarizer/analyzer

Fig. 3. Quantitative polarization imaging of zebrafish muscle tissue. (a) Bright-field image of wild-type zebrafish at 3 days post-fertilization (lateral view); (b) polarization images at a serial rotating angles for the orthogonal polarizer/analyzer; (c) optical intensity at position 1 and position 2 from the serial polarization images, and the corresponding fitting curves; (d) image of quantitative phase retardance

Fig. 4. Comparison of images between wild-type and muscle-damaged zebrafish somite structures. (a) Bright field image of wild type zebrafish at 3 days post-fertilization; (b) phase retardance image corresponding to (a); (c) bright field image of muscle-damaged zebrafish at 3 days post-fertilization;(d) phase retardance image corresponding to (c); (e) average retardance of each somite along the zebrafish abdomen and back, domain represents the number of somite; (f) phase retardance distribution of every

Fig. 5. Muscle growth of wild-type zebrafish and muscle-damaged zebrafish from day 3 to day 7. (a) Phase retardance curves of the 10th somite dependent on time; (b) phase retardance image of wild-type zebrafish dependent on time; (c) phase retardance image of muscle-damaged zebrafish dependent on time