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Osteoclast histomorphometry in scales from wild-type and sqstm1tmΔUBA zebrafish at 6 mpf. a Representative images of Von Kossa (top row) and TRAP staining (bottom row) of elasmoid scales from 2 different sqstm1+/+, sqstm1tmΔUBA/+ and sqstm1tmΔUBA/tmΔUBA at 6 mpf. Non-mineralization, i.e., bone resorption and TRAP-positivity are shown by arrowheads and arrows, respectively. Black spots indicate staining artifacts. b Quantification of circularity, c relative resorbed area over total scale area, and d relative TRAP-stained area over total scale area. Each data point represents an individual scale. n = 4 zebrafish/genotype and n = 9 (on average) scales/zebrafish/staining. Statistical analysis was performed using Kruskal–Wallis Tests/Mann–Whitney U Tests. WT wild type (sqstm1+/+), HET heterozygous mutant (sqstm1tmΔUBA/+), HOM homozygous mutant (sqstm1.tmΔUBA/tmΔUBA)
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