Data underlying the figures in the publication “Biomarker Signatures of Quality for Engineering Nasal Chondrocyte-Derived Cartilage”, published in Front Bioeng Biotechnol., 2020, 8: 283. (DOI: 10.3389/fbioe.2020.00283). Table of contents: 1. biochem_summary; Biochemistry data and MBS of pellets made from NC and PC mixtures in the titration experiment. 2. dirty-clean-biochem; Biochemistry data and MBS of pellets made from passage 2 cells from dirty/clean biopsies. 3. identity_all; All passage 1 and passage 2 cells of type pure NC and pure PC from the titration and dirty/clean datasets. All PCR data included. 4. identity_titration; Passage 1 and 2 and pellets made from pure NC and PC populations in the titration experiment. All PCR data included. Average (avg) refers to the average of the biologicsl replicates (which are already the average of the experimental replicates of Data 5). 5. identity_titration_avg; Passage 1 and 2 and pellets made from pure NC and PC populations in the titration experiment. All PCR data included. All experimental replicate information is included (which are the average of the technical replicates). 6. PCR_cells_summary; For the purity and potency assays, mixtures of increasing NC to PC cell ratios were created. The PCR data from those mixtures are here for passage 2 and for the pure populations as passage 1. 7. PCR_pellet_summary; For the purity and potency assays, mixtures of increasing NC to PC cell ratios were created. PCR data from engineered pellets are here included. 8. PCRdirty-clean; PCR data of cells obtained from dirty/clean biopsies at passage 0,1, and 2. 9. PCRsummary_all; Combined Data 5, 7, and 8. 10. Proliferation_TOT; Proliferation rates of cells from clean and dirty biopsies.