Osteocyte evaluation in the vertebral column of wild-type and sqstm1 mutant zebrafish. a Representative images after Masson’s Trichrome staining of vertebral column sections of a wild-type and homozygous mutant zebrafish at 6 mpf (ventral side below, scale bar = 100 µm). b Magnification of the black square in (a). Examples of osteocyte lacunae classified as “non-enlarged” and as “enlarged” are indicated by red and black arrow heads, respectively. c Quantification of the total osteocytes per unit area of bone matrix. Each data point represents the average of 2 precaudal or caudal fields per zebrafish. d Fraction of the number of enlarged osteocyte lacunae over the total number of osteocytes. Each data point represents the average of 2 precaudal or caudal fields per zebrafish. n = 4 zebrafish/genotype/age. 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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