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Min-Max normalization of mass density ((A,D), depicted in violet), weight ((B,E), represented in blue), and diameter ((C,F), shown in grey) in relation to the gene expression levels of Sox-9 (shown in green), collagen type II (depicted in red), and aggrecan (displayed in yellow). The Min-Max normalization was computed over time for chips (A–C) and ULA (D–F). The values were expressed as a percentage of the data range.
